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AysviL [449]
3 years ago
7

15 POINTS HELP ME PLEASE!!!

Mathematics
2 answers:
Alexxx [7]3 years ago
6 0
-8a-6-10a-2+5a
-18a-6-2+5a
the answer is -13a-8

second

6x-4+3x+8
9x-4+8
the answer is 9x-4
mars1129 [50]3 years ago
4 0

Answer:

-13a -8

9x+4

Step-by-step explanation:

-8a + (-6)- 10a - 2 + 5a

-8a -10a +5a -6-2

Combine like terms

-18a +5a -8

-13a -8


6x - 4 + 3x + 8

6x+3x -4+8

Combine like terms

9x+4



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Bogdan [553]

Answer:

A

Step-by-step explanation:

3 0
3 years ago
The area of a circle is 28.26 square meters. What is the circle's diameter?
ikadub [295]

Answer: area for circle is  πr² so πr² =28.26 and we can sub 3.14 as pi

3.14*r²=28.26 we can divide by 3.14 to get r² on it's own

r²=28.26/3.14

then we root both sides to get r on it's own

28.26/3.14=9 √9=3

and the diameter is double the radius 3*2=6 so the diameter is 6

Step-by-step explanation:

7 0
3 years ago
Henry has 4 more cards than Doug. Doug has 12 cards. How many cards does Henry have?
PIT_PIT [208]

Answer: doug has 16 cards

Step-by-step explanation: 12+4=16

                                        Give brainliest if it help :)

4 0
2 years ago
Read 2 more answers
I am having trouble with this problem....
Alexeev081 [22]

There 2 angles are corresponding angles, in which the angle measurements would have the same degree.

Set the two angles equal to each other, and solve for x.

7x - 1 = 8x - 14

Isolate the x. Subtract 8x from both sides, and add 1 to both sides

7x (-8x) - 1 (+1) = -14 (+1)

7x - 8x = -14 + 1

-x = -13

Isolate the x. Divide -1 from both sides

(-x)/-1 = (-13)/-1

x = -13/-1

x = 13

13 is your answer for x.

~

4 0
3 years ago
Which equations are true equations? Select all correct answers. Responses 15052=30−42−12 150 over 5 squared equals 30 minus 4 sq
Helen [10]

All the correct answers of the equations using order of operations are;

B. 8⋅7 ÷ 2 − 12 = 22 − 2⋅3

C. 48 ÷ 8 + 2³ = 5 + 3²

<h3>How to use order of operations?</h3>

The rule used for order of operations is PEMDAS and it states that the order of operation starts with the calculation enclosed in brackets or the parentheses first. Exponents (degrees or square roots) are then operated on, followed by multiplication and division operations, and then addition and subtraction.

Using the PEMDAS rule, the solutions would be as follows:

A. 9² − 7² = 20 ÷ (7 − 2)

81 - 49 = 20 ÷ 5

32 = 4

Thus, this is not true.

B. 8⋅7 ÷ 2 − 12 = 22 − 2⋅3

56 ÷ 2 − 12 = 22 - 6

28 - 12 = 16

16 = 16

Thus, this is true.

C. 48 ÷ 8 + 2³ = 5 + 3²

6 + 2³ = 5 + 9

6 + 8 = 14

14 = 14

Thus, this is true.

D. 150 ÷ 5² = 30 − 4² − 12

150 ÷ 25 = 30 − 16 − 12

6 = 30 - 28

6 = 2

Thus, this is not true.

Read more about Order of operations at; brainly.com/question/550188

#SPJ1

Complete question is;

Which equations are true equations? Select all correct answers.

A. 9² − 7² = 20 ÷ (7 − 2)

B. 8⋅7 ÷ 2 − 12 = 22 − 2⋅3

C. 48 ÷ 8 + 2³ = 5 + 3²

D. 150 ÷ 5² = 30 − 4² − 12

8 0
1 year ago
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