If the length of a rectangle is (x + 7) inches and the width is (3x+2) inches. Which expression represents the rectangle's area? HINT: Area = width * length
Answer:
The answer is no 1:
[tex]3x ^{2} + 23x + 14[/tex]
HELP 25 POINTS +BRAINIEST The weight of a substance measures 3 × 10^-3. grams. Express this weight in standard notation.
Answer:
Scientific notation is a way of writing very large and very small numbers.
A number in scientific notation has the form
N
×
10
a
, where
N
is a number between 1 and 10, and
a
is a positive or negative integer.
To convert to scientific notation, you move the decimal point until the new form is a number between 1 and 10 (
N
) and then record the exponent (
a
) as the number of places the decimal point was moved.
If you move the decimal to the right, the exponent is negative.
Express
0.000 000 03 g
in scientific notation.
Step 1. Move the decimal place to the right to create a new number between 1 and 10.
This gives
N
=
3
.
Step 2. Count the number of times you moved the decimal.
You moved the decimal 8 places to the right.
That means the exponent
a
=
-8
.
Step 3. Write the number in scientific notation.
0.000 000 03 g
=
3
×
10
-8
l
g
Step-by-step explanation:
Jake packed 3 pairs of shorts for a trip: 1 khaki and 2 denim. He also packed 3 T-shirts: 2 white and 1 red. In the dark he randomly selected a pair of shorts and a T-shirt. What is the probability that he selected a pair of khaki shorts and a white T-shirt?
Select one:
1/4
2/9
1/3
1/9
PLZ ANWSER IT OR I'LL REPORT YOU!
What is a fraction? What does it represent? Give an example.
FIRST TO AWNSER CORRECTLY GETS BRAINLIEST
Answer:
a fraction is a numerical quantity that is not a while number; aswell as a small ot tiny part, amount, or proportion of something. fractions represent equal parts of a whole or a collection. example of a fraction: 1/4, 1/2, 1/25, ect.
Bryson is updating his computer. The amount of
time required for a complete update is 48 minutes. The
update is currently 40% complete. How much longer will it
take for the update to be complete?
Answer:
28.8 min
Step-by-step explanation:
48 x 40% = 19.2
48-19.2 = 28.8
There are 6 squares and 9 circles. What is the simplest ratio of squares to
total shapes?
Answer:
2:5
Step-by-step explanation:
A nurse is investigating the birth weights of non-premature babies. She selects a random sample of 41 such babies, and found a mean weight of 3506.4 grams and a sample standard deviation of
494.2 grams. Find a 95% confidence interval for the mean birth weight of all non-premature babies. Show your calculation for the confidence interval as well as the final confidence interval rounded to one decimal place. Then write a sentence that gives the interpretation of your confidence interval, including the correct units.
Answer:
The 95% confidence interval for the mean birth weight of all non-premature babies is between 3350.4 grams and 3662.4 grams. This means that we are 95% sure that true mean birth weight of all non-premature babies is in this interval.
Step-by-step explanation:
We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 41 - 1 = 40
95% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 40 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.95}{2} = 0.975[/tex]. So we have T = 2.0211
The margin of error is:
[tex]M = T\frac{s}{\sqrt{n}} = 2.0211\frac{494.2}{\sqrt{41}} = 156[/tex]
In which s is the standard deviation of the sample and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 3506.4 - 156 = 3350.4 grams
The upper end of the interval is the sample mean added to M. So it is 3506.4 + 156 = 3662.4 grams
The 95% confidence interval for the mean birth weight of all non-premature babies is between 3350.4 grams and 3662.4 grams. This means that we are 95% sure that true mean birth weight of all non-premature babies is in this interval.
What is 0+0 plz help me o am in college and need help
The answer is 0
0+0=0
helppp!!! What is the value of y?
60°
v2
45
Enter your answer, as an exact value, in the box.
Answer:
y=2√3, or 3.46410161513
Step-by-step explanation:
The smaller triangle is a right isosceles triangle, so the other side is also √2. To figure out it’s hypotenuse, you can use the Pythagorean theorem.
√2²+√2²=c²
2+2=c²
4=c²
√4=c
c=2
Now that we know that value, we can look at the bigger triangle. It is a 30-60-90 triangle, which has special properties.
Y would equal the two of the base times the square root of three.
y=2√3, or 3.46410161513
The value of the y is 2√3 if the value of hypotenuse in the triangle with 60-degree angles is 2
What is a right-angle triangle?It is a triangle in which one of the angles is 90 degrees and the other two are sharp angles. The sides of a right-angled triangle are known as the hypotenuse, perpendicular, and base.
From the sin ratio in the triangle with angle 45 degree
Sin45 = √2/x
x = 2
From the triangle with angle 60 degree
y/2 = tan60
y = 2√3
Thus, the value of the y is 2√3 if the value of hypotenuse in the triangle with 60-degree angles is 2
Learn more about the right angle triangle here:
brainly.com/question/3770177
#SPJ2
Select all of the following that can be a counterexample for the statement below.
If x is an integer, then x + 2 >7
1- -2
2- 0
3- 3
4- 4
5- 6
6- 8
Answer:
-2. 0. 3. 4
Step-by-step explanation:
counterexample are the opposite so ur gonna chose the false ones the number has to be less than 7 so -2 0 3 4
Plz help me I will give you 40 points and Brainly
what does 14a and 5b and 2a and 10b mean
Answer:
16a+15b
Step-by-step explanation:
Just like addition
Answer:
They are variables
Step-by-step explanation:
zhsineidhwvd
find x
help please, asap.
Answer:
X=58 degrees
Step-by-step explanation:
So We can start by finding the angle thats supplementary to 109.
Well 109 and another unknown angle (which will be Y for this scenario) would form a straight line which is 180 degrees.
109+y=180
Solve that by isolating the y and you would get 71 as the missing side.
Now we have 2 sides, 71 and 51. We’re trying to find x or the angle vertical to the thrid interior angle of the triangle.
Vertical is basically equal so we really just gotta find the third side. A triangle is equal to 180 degrees and if you add em up.
71+51+x=180
Combine like terms
122+x=180
Isolate the X
x=58
So x is 58 degrees.
Answer:
x = 180 - 51 - 71 = 58°
which number is at point T on the number line?
Answer:
-2/3
Step-by-step explanation:
DONT SCAM ME WITH A LINK
Answer: 2
600/3 = 200 meaning that each gallon of paint covers 200 sq ft
3. A savings account has a 3% interest rate. (a) Complete the ratio table shown. Show your work. Deposit ($) 100 50 300 Interest ($) 3 12 6 36 (b) How much more interest would you have if you deposited $200 than if you deposited $150? Show your work.
Answer:
Wait what
Step-by-step explanation:
A Jar contains 125 marbles. Given 3% of the marbles are green, 9% of the marbles are blue, and the rest are red, how many red marbles are in the jar? There are red marbles in the jar?
Answer:
111 red balls
Step-by-step explanation:
125×0.03= 3.75 3balls
125×0.09=11.25 11balls
125-3-11=111
111 is red
Find the value of x. i’m so lost. it’s geometry!
Answer:
150°
Step-by-step explanation:
Consider OACB,
Here <CAO =<CBO= 90° ( As they are tangents)
<ACB= 30°
Now, <CAO +<CBO+<ACB+x= 360°
90°+90°+30°+x= 360°
x= 150°
Hope it helps
Answer:
150°
Step-by-step explanation:
Construct a line OC, and consider the resulting triangles ΔOAC.
<AOB=(1/2)x
<CAO=90
<ACO=30/2=15
Angles in a triangle add to 180, so
90+15+(x/2)=180
x/2=75
x=150°
please answer this and not take the points or I will report you
Put the lowest number on the left 2 0 -3 -4
Answer:
-4, -3, 0, 2
Step-by-step explanation:
Answer:
-4,-3,0,2 :p ...........
PLEASE HELP I ONLY HAVE AN HOUR !!!!
Answer:
2
Step-by-step explanation:
A=[tex]\pi[/tex]r²
(19/6)[tex]\pi[/tex]=(285/360)[tex]\pi[/tex]r²
Divide both sides by pi, and they cancel out.
x is the radius, so replace r with x.
19/6=285/360x²
19/6÷285/360=x²
(19/6)·(360/285)=x²
4=x²
√4=x
2=x
Samantha jogs 3 miles in 45 minutes.
How many miles can she jog in 1 hour?
Answer:
4 miles in 1 hour.
Step-by-step explanation:
1 hour = 60 mins
Ratios:
[tex]\frac{3}{45} =\frac{x}{60} \\\\45x=180\\x=4[/tex]
Answer:
4 miles
Step-by-step explanation:
45/3=15 she runs 1 mile in 15 mins so in 1 hour she can jog 60/15=4 miles
Solve y = x2-5 for x.
A. X = y +5
B. X=-+ y-5
C. X = y-5
D. X = -+ y+5
y = x^2 - 5
y + 5 = x^2
(Now you need to square root both sides)
√y+5 = x
x = PLUS OR MINUS √y + 5
I
Which ordered pair could you add to the following list of points to
create a function? (3,5) (4, 9) (2,5)
(4, 1)
(2,6)
(3,7
(1,9)
Answer:
2-6
Step-by-step explanation:
5 673226
beth owes 17000 on her car loan. the interest rate on her loan is 4.25% she will be paying this loan off in 4 years how much will beth pay all together?
28,900
19,890
2890
45,900
Answer:She has to pay $20078.7 amount.
Step-by-step explanation:
Given : Beth owes 17,000 on her car loan. The interest rate on her loan is 4.25% She will be paying this loan off for 4 years.
To find : How much will she pay altogether?
Solution :
Using compound interest formula,
A = P(1 + r)
Where A is the amount
P is the principle P=17,000
P is the rate r=4.25%=0.0425
t is the time t= 4 years
Substitute the value,
Therefore, She has to pay $20078.7 amount.
Allison designs fancy boxes to fill with chocolates. The boxes are in the shape of a right square pyramid as shown, where 8y represents the
length of one side of the base of the pyramid, and 5y represents the height of one triangular face of the pyramid.
8y
The large size box must be designed to have a volume of 1,000 cubic centimeters,
Create an equation that can be used to calculate the length of the base and height of the triangular face of the box. Enter your equation in
the first response box.
The requreid equation that can be used to calculate the length of the base and height of the triangular face of the box is:
8y ≈ 8.4 cm
5y ≈ 5.8 cm
What is volume?Volume is defined as the mass of the object per unit density while for geometry it is calculated as profile area multiplied by the length at which that profile is extruded.
The formula for the volume of a square pyramid is:
V = (1/3) * base area * height
In this case, the base of the pyramid is a square with a side length of 8y, so the base area is:
base area = (8y)² = 64y²
The height of each triangular face is given as 5y, so the total height of the pyramid is 2 * 5y = 10y.
Substituting these values into the formula for volume, we get:
1000 = (1/3) * 64y² * 10y
y ≈ 1.16
Therefore, the length of the base of the pyramid is:
8y ≈ 8.4
And the height of each triangular face is:
5y ≈ 5.8 cm
So the equation that can be used to calculate the length of the base and height of the triangular face of the box is:
8y ≈ 8.4 cm
5y ≈ 5.8 cm
Learn more about Volume here:
https://brainly.com/question/1578538
#SPJ2
Describe the figure that is created with the points ( -2, -3) ( - 2, 5, (1, -3), and (1, 5)
Answer:
Hi! The answer to your question is Rectangle
Step-by-step explanation:
↗✧*☆*: .｡..｡.:*☆♪↗✧*☆*: .｡..｡.:*☆♪
☆Brainliest is greatly appreciated!☆
Hope this helps!!
Stay Safe!!!
- Brooklynn Deka
HELP! WILL GIVE BRANLIEST!
Answer:
ITS X=14 GURL TRUST
Step-by-step explanation:
In a study of the relationship between pet ownership and physical activity in older adults, 586 subjects reported that they owned a pet, while 1931 reported that they did not. Give a 98% confidence interval for the proportion of older adults in this population who are pet owners. Lower limit Incorrect: Your answer is incorrect. Upper limit
Answer:
Step-by-step explanation:
In a study of the relationship between pet ownership and physical activity in older adults, 586 subjects reported that they owned a pet, while 1931 reported that they did not. Give a 98% confidence interval for the proportion of older adults in this population who are pet owners. Lower limit Incorrect: Your answer is incorrect. Upper limit
p ± z × (1 - p/n)
z = 98%
p = 586/1931
= 0.3034697048
n = 1931
Approximately = 0.3035
Confidence interval =
0.3035 + 2.326 × ( 1 - 0.3035/ 1931)
30 POINTS!!!!! I WILL GIVE BRAINLIEST!!!!!!
What is the measure of angle PQR?
Answer:
40
Step-by-step explanation:
It tells you what Q, R is for the opening. That means that it is 40
The measure of angle PQR is 70 degrees
We have a right triangle - r is 90 degrees
based on geometric rules: angle RPQ = 20
40 : 2
90 + 20 = 110
110 + x = 180
What is the perimeter of the triangle?
The perimeter of the triangle is 180 degrees
The triangle has 180 degrees.
This means that 180 - 110 =70 degrees.
The measure of angle PQR is 70 degrees.