3 years ago

Write an equivalent expression for 4(3a+7) +(2a+5) if a = 5 is the solution to both expressions the same?

Mathematics

1 answer:

ollegr [7]3 years ago

3 0

Substitute 8 for a
4[3(8)+7] + 2(8) +5
=4[24+7] +16+5
=4(31)+21
=124+21
=155

You might be interested in

Which expressions are equivalent to 4 (3e + 2) + 9(e + 4) +1?

erica [24]

Answer: i dont know

Step-by-step explanation:

4 0

2 years ago

What is the value of x in the equation 2/3(1/2x+12)=1/2(1/3x+14)-3?

Jlenok [28]

Answer:

a. -24

Step-by-step explanation:

Multiply by 6 ...

2/3(1/2x+12)=1/2(1/3x+14)-3

4(1/2x +12) = 3(1/3x +14) -18 . . . . . . multiply by 6

2x +48 = x +42 -18 . . . . . . . . . . . . . .eliminate parentheses

x = 24 -48 = -24 . . . . . . . . . . . . . . . . simplify and subtract (x+48)

7 0

3 years ago

Harold earns $10.50 per hour working at a doctor’s office. On Monday he spent 1 5/12 hours filing paper work, 1 3/4 sending emai

maks197457 [2]

Answer:$57.75

Step-by-step explanation:

Find the total amount of hours he worked

$1\frac{5}{12} +1\frac{3}{4} +2\frac{1}{3}\\\\\frac{17}{12}+ \frac{7}{4} +\frac{7}{3} \\\\\frac{17+21+28}{12} \\\\\frac{66}{12}=\frac{66/2}{12/2}=\frac{33/3}{6/3}= \frac{11}{2} or 5\frac{1}{2} or 5.5h$

So, he worked 5.5h and he earns $10.50 an hour.

($10.50)(5.5h)=$57.75

5 0

3 years ago

From a view tower 30 metres above the ground, the angle of depression of an object on the ground is 30 and the angle of elevatio

kompoz [17]

Answer:

90 I guess so

It might be wrong

8 0

3 years ago

Find the missing side. Round your answer to the nearest tenth.

jasenka [17]

Answer:

<em>11.8 units </em>

Step-by-step explanation:

$\frac{x}{29}$ = sin 24°

x = 29 sin 24° ≈ <em>11.8 units</em>

8 0

3 years ago