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2 years ago

Consider the equation 7x+2(x+5)=9x+10.

Mathematics

1 answer:

Alexandra [31]2 years ago

6 0

Answer:

7*-5+2(-5+5)=-35

9*-5+10=-35

7*2+2(2+5)=28

9*2+10=28

Step-by-step explanation:

when plugging the x values in, you get the same answer for both equation, make the equation equal.

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On average during the summer, a 30,000 cubic foot house costs $7 per day to cool, while a 25,000 cubic foot house costs $6.50 pe

Ber [7]

The house with 30000 cubic foot costs less to cool per cubic foot than the house with 25000 cubic foot.

Step-by-step explanation:

The cost of cooling 30000 cubic foot house = $7

Cost per cubic foot = 7/30000

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The cost of cooling 25000 cubic foot house= $6.50

Cost per cubic foot=6.50/25000

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3 years ago

2(4x – 12) + 10 – 6x = 12

SashulF [63]

Answer:

idk what the improper fraction would be but

8x-24+10-6x=12

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Step-by-step explanation:

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3 years ago

Jamie is conducting inventory at a public library, so they have to verify that each item from the catalog is in its correct loca

Andrei [34K]

Answer:

Mean: 33.3

SD: 32.8

Step-by-step explanation:

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3 years ago

Please help me with this and I will give one of the answers most brainliest

inna [77]

A)

$A=8\qquad\qquad B=12.5\\\\\\d(A,B)=|12.5-8|=|4.5|=\boxed{4.5\,\text{cm}}$

b)

$C=?\\\\\\d(C,A)=2\cdot d(C,B)\\\\|A-C|=2\cdot|B-C|\\\\|8-C|=2\cdot|12.5-C|\\\\
|8-C|=|25-2C|\\\\\\8-C=25-2C\qquad\vee\qquad8-C=-(25-2C)\\\\-C+2C=25-8\qquad\vee\qquad8-C=-25+2C\\\\C=17\qquad\vee\qquad8+25=2C+C\\\\C=17\qquad\vee\qquad33=3C\quad|:3\\\\\boxed{C=17\qquad\vee\qquad C=11}$

Mark 11 or 17.

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3 years ago

What is -2 square root of 20 negative square root of 125 in its simplest radical form

Ivenika [448]

Answer:

-7√5

Step-by-step explanation:

I'll transcribe your verbal question into a symbolic one as best I can:

-2√20 - √125

Note how √20 = √4*√5 and √125 = √25 *√5. Thus,

your -2√20 - √125, after we've factored √5 out of both terms, becomes

-2(2)√5 - 5√5, or -2√5 - 5√5, which combines to form

-7√5 (answer)

7 0

3 years ago

Read 2 more answers