The quadratic x squared - 4x -21 find values of a and b

Answer:

27-64

Step-by-step explanation:

cheating in tests are bad, searching for answers in tests is also bad

but the range is 27-64

Answer:

If a quadrilateral is a parallelogram, then consecutive angles are supplementary. If both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram.

Step-by-step explanation:

False

We can simplify the expression to be sure: 100 * 0.15 = 15

Answer:

No

Step-by-step explanation:

You can do this in two ways-

You can multiply 0.15 and 100, and you will get 15.

-OR-

You can move the decimal points two places to the right since 100 has two zeros. (You could move it to the right three if it were 1000 because it has three 0s)

Answer:

Step-by-step explanation:

54.3

Answer: 54.4

Step-by-step explanation: The 6 rounds the 3 up to 4. If it was 4 (54.4) or below it would be 54.3.

Answer:

Store C

Step-by-step explanation:

store a is selling 10 pencils for $2.50

$2.50 divided by 10 is 25 cents

so the price for store a is 25 cents per pencil

store b is selling 50 pencils for $6.00

$6.00 divided by 50 is 12 cents

so the price for store b is 12 cents per pencil

store c is selling 100 pencils for $8.25

$8.25 divided by 100 is 8.25 cents

obviously you can't give someone .25 cents so round it down to 8

so the price for store c is 8 cents per pencil

store d is selling 250 pencils for $21.25

$21.25 divided by 250 is 8.5 cents

which rounds up to 9 cents per pencil

Store c has the lowest price for one pencil

Answer:

Step-by-step explanation:

sin(62°) = 25/BA

BA = 25/sin(62°) ≈ 28.3

Angle BAC = 180°-90°-62° = 28°

BC = √((BA)^2-(AC)^2) = 13.3

cosC = 0

Answer:

Step-by-step explanation:

Given ΔABC

The options:

A. 25/BA = sin 62° ⇒ BA = 25/sin 62° = 28.3 ≈ 28

B. ∠BAC = 90° - 62°= 28° ≠ 48°

C. 25/BC = tan 62° ⇒ BC = 25/tan 62° = 13.29 ≠ 18

D. cos(∠ACB) = 0 ⇒ cos 90° = 0

Answer:

$96

Step-by-step explanation:

Answer:

96

Step-by-step explanation:

80*.20=16

80+16=96

Answer:

60 degrees

Step-by-step explanation:

all angles of an equilateral triangle are 60 degrees

Answer:

x=60

Step-by-step explanation:

We know that since all sides are the same, all angles are the same.

x=angle

(180) is the amount of degrees when you add up all of the angles in the triangle

3x=180

x=60

Answer:

dfgrWHTNWEeneyjaayaeyneyan

Step-by-step explanation:

Answer:

Step-by-step explanation:

When working you earn a wage of $150 and then an additional 20 for each item you sell

Look at the screenshot below

Answer:

126000

Step-by-step explanation:

20×70×90

Multiply 20 and 70 to get 1400.

1400×90

Multiply 1400 and 90 to get 126000.

126000

Answer:

126000

Step-by-step explanation:

20×70×90

Multiply 20 and 70 to get 1400.

1400×90

Multiply 1400 and 90 to get 126000.

126000

Answer:

Step-by-step explanation:

if the question mean the white circle the ans is 3.14

if the question mean the shaded circle the ans is 129.9

if the question mean both shaded and white circle the ans is 133.04

Answer: 50 miles

Step-by-step explanation:

Because 25 x 2 = 50

and 1 inch is 25 miles and 2 inches is then 50 miles

Answer:

C. 50 miles

Step-by-step explanation:

Answer:

30.05

Step-by-step explanation:

10% 27 = 2.7

5% 27 =1.35

2.7+ 1.35 = 3.05

27 + 3.05 = 30.05

Answer:

Determine the ratio of shaded sections to the total number of sections. Write the ratio as a fraction in simplest form and as a decimal.

Answer:

3/8

Step-by-step explanation:

Total no. of sections= 8

No. of shaded sections= 3

Therefore, the ratio = 3/8

Answer:A:1

Step-by-step explanation:

Answer:

1584 inches cubed

Step-by-step explanation:

Answer:

approximately 550,390,000 km

Step-by-step explanation:

Answer:

approximately 550,390,000 km

Step-by-step explanation:

sorry im late

Answer:

Ground shaking is the primary cause of earthquake damage to man-made structures. Many factors influence the strength of earthquake shaking at a site including the earthquake's magnitude, the site's proximity to the fault, the local geology, and the soil type.

The places on the planet where one plate meets another are the most prone to earthquakes. The specific surfaces where parcels of earth slip past each other are called faults. As plates move, pressure builds up across their boundaries, while friction holds them in place

Over 80 per cent of large earthquakes occur around the edges of the Pacific Ocean, an area known as the 'Ring of Fire'; this where the Pacific plate is being subducted beneath the surrounding plates. The Ring of Fire is the most seismically and volcanically active zone in the world.

Answer:

1:2

Step-by-step explanation:

12:24=1/2

Answer:

X=14

Step-by-step explanation:

17^2+b^2=19^2

289+b^2=361

361-289=72

The square root pf 72 is ~8.5

subtract 17 from 31 (to get rid of the triangle bases on the bottom).

31-17=14

X=14

Answer:

y= 28x+8

Step-by-step explanation:

Answer:

1/3 - 1/4 = 1/12Step-by-step explanation:

Answer:

The angles of both figures are listed in the same order. The first angle of the first one is congruent to the first angle of the second, and the second angle of the first one is congruent to the second angle of the second figure, and so on.

Step-by-step explanation:

You have a repeated 'F' in naming the first figure, so I think you made an error. But the rule in my answer is true and you can apply it.