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Vitek1552 [10]
3 years ago
8

Please help, I will give brainliest to whoever helps!

Mathematics
1 answer:
dem82 [27]3 years ago
5 0
63)B
64)J
65) i think B but i am not sure
66)
x -10
x 2
(x-10)(x+2)
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A running track at a school is shaped like oval. The track is 1/2 miles long . Mr. Perez puts a marker down every 1/8 mile .
Lunna [17]

Answer:

4 markers

Step-by-step explanation:

1/2 miles divided by 1/8 miles equals 4 markers.

1/2 ÷ 1/8

Apply the fraction rule:

1/2 × 8/1

Cross cancel common factor 2:

= 4/1

= 4

Hope this helps!

4 0
3 years ago
At the beginning of the week the balance in your bank account was $298.72. During the week you made a deposit of $425.69. You al
Nastasia [14]
425.69+298.72=724.41

29.72+135.47+208.28=373.47

724.41-373.47=350.94

350.94-5=345.94

The answer is c
7 0
4 years ago
Read 2 more answers
Use the substitution method to determine the solution of the system of equations. y = -5x and 21x - 7y = 28
8_murik_8 [283]

Answer:

x = 1/2   y = -5/2

Step-by-step explanation:

Since we already know an equation for y, we just need to plug it into the other equation.

21x - 7(-5x) = 28

21x + 35x = 28

56x = 28

x = 1/2

Now that we know x, we substitute it into the other equation, to find y.

y = -5x

y = -5(1/2)

= -5/2

3 0
3 years ago
What goes in the blanks? (a2 +___+1)−(___+5a+___)=4a2 −2a+7
andrey2020 [161]

Answer:

4a2 + 4a + 1 = (2a +1)^2 = (2a + 1)(2a + 1)

4 − 4a + a2  = (2 - a)^2 = (2 − a)(2 − a)

4a2 − 4a + 1 = (2a -1)^2 = (2a − 1)(2a − 1)

4 + 4a + a2 = (2 + a)^2 = (2 + a)(2 + a)

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the value of y in the parallelogram below?<br> 108<br> O A. 24<br> O c. 69<br> O D. 36
My name is Ann [436]

Answer:

(A) y = 24

Step-by-step explanation:

Given GDEF is a parallelogram and m∠E = 108°

To find: value of y

In ║grm GDEF,

m∠D + m∠E = 180°   (Consecutive angles of parallelogram are supplementary)

3y° + 108° = 180°

3y° = 180° - 108°

3y° = 72°

y = 72°/3 = 24°

Therefore, option (A) is the correct answer.

5 0
3 years ago
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