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3 years ago

Which of the following word problems can be solved using the equation 10 x - 15=60

Mathematics

1 answer:

Alja [10]3 years ago

8 0

Answer:

Kit buys

Step-by-step explanation:

im right

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4. If DF = 9x - 39, find EF. Help I’m so confused!!!!

topjm [15]

Answer:

EF =58

Step-by-step explanation:

from the illustration,

EF =DF - DE

given that DF =9x-39 , DE =47 EF=3x +10

substitute them into the formula,

3x +10=9x-39 - 47

solving for x

3x +10 =9x -86

grouping like terms

3x - 9x =-86 -10

-6x=-96

dividing through by -6

 $\frac{ - 6x}{ - 6} = \frac{ - 96}{ - 6}$ 

 $x = \frac{96}{6}$ 

 $x = 16$ 

but EF=3x+10

substitute x=16 into it to get the EF

EF= 3(16)+10

EF=48+10

EF=58

6 0

3 years ago

Read 2 more answers

Help i'll make you the brainliest

9966 [12]

Answer:

D) b = $\frac{S-2ac}{2a + 2c}$

Step-by-step explanation:

First, move all the terms that do not include b to the left side with S:

S = 2ab + 2bc + 2ac

S - 2ac = 2ab + 2bc

Now, factor out 2b from the right side:

S - 2ac = 2b(a + c)

Divide both sides by 2(a + c):

b = $\frac{S-2ac}{2(a + c)}$

Finally, multiply out the denominator:

b = $\frac{S-2ac}{2a + 2c}$

7 0

3 years ago

PLEASE HELP ASAP WILL GIVE BRAINLIEST!!!!!

olasank [31]

Answer:

A. (0,7)

B. -1.25

C. Negative

D. I started at (0,7), then plotted the second point by moving the point down 5 and right 4.

Step-by-step explanation:

Look at the equation more carefully.

I hope this helps :)

5 0

3 years ago

Read 2 more answers

Write a mathematical sentence for the inequality twice the difference of a number and seven is less than or equal to forty

Illusion [34]

$2x + 7\leqslant 40$
Sounds like that to me but that is symbolically showing of that's what your teacher means as mathematical sentence

5 0

3 years ago

Read 2 more answers

What is the math answer for 8x+6

BigorU [14]

8x+6 would still be 8x+6 because you cannot add 6 to 8x. remember, 8x means x, 8 times.

5 0

3 years ago