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3 years ago

11

Solve for ddd. Give an exact answer. 0.5(7d+4)=7-1.5d0.5(7d+4)=7−1.5d0, point, 5, left parenthesis, 7, d, plus, 4, right parenth

esis, equals, 7, minus, 1, point, 5, d=

1 answer:

LuckyWell [14K]3 years ago

8 0

Answer:

d = 1

Step-by-step explanation:

The equation given is:

0.5(7d + 4) = 7 - 1.5d

Expand the bracket:

3.5d + 2 = 7 - 1.5d

Collect like terms:

3.5d + 1.5d = 7 - 2

5d = 5

d = 5 / 5 = 1

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15 - 4x = -9x + 75

algol13

Answer:

x=12

Step-by-step explanation:

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3 years ago

3. Based on the diagram, what can you conclude and why?

Aleksandr-060686 [28]

The answer to this is D.

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3 years ago

Which expression is equivalent to 16+8 pls and thank you!!\<br> 4(4+4) 4(4+8) 2(14+4) 2(8+4)

Ilya [14]

Answer:

2(8+4)

Step-by-step explanation:

We have 4 expressions here:

4(4+4):

Since 4*4=16

4(4+4)=16+16

4(4+8):

Since 4*4=16 and 4*8=32

4(4+8)=16+32

2(14+4):

Since 2*14=28 and 2*4=8

2(14+4)=28+8

2(8+4):

Since 2*8=16 and 2*4=8

2(8+4)=16+8

The answer is 2(8+4)!

Hope this helps!

7 0

3 years ago

Please help me use the attachment to see the question

Zinaida [17]

$(m^{2} -m+3)+(m-1)$
$= m^{2} -m+3+m-1$ . . . . . . . . (opening the brackets)
$= m^{2} -m+m+3-1$ . . . . . . . . (collecting like terms)
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3 0

3 years ago

A group of preschoolers has 15 boys and 12 girls. What is the ratio of girls to boys.Also pls show me how u get it.

Over [174]

Answer:

12:15

Step-by-step explanation:

girls:boys

12 to 15

even though 15 is first in the problem, the question is asking girls to boys not boys to girls

comment if u need me to explain more :)

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3 years ago