3 years ago

The sum of a number x and 7 is 35 dont need answer

Mathematics

1 answer:

Sveta_85 [38]3 years ago

6 0

Answer:

Step-by-step explanation:

x + 7 = 35

subtract 7

x = 28

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SOS if anyone could help that would be appreciated!!!❤️

Anastaziya [24]

Answer:

See below

Step-by-step explanation:

$2e)15-4x=10x+45$

Solve:

$15-4x=10x+45\\-4x-10x=45-15\\-14x=30\\ \boxed {x=-\dfrac{15}{7}}$ $3(x+1)=21$

Check:

$15-4 \left(-\dfrac{15}{7} \right)=10\left(-\dfrac{15}{7} \right)+45$

$15+\dfrac{60}{7} \right)=-\dfrac{150}{7} +45$

$\dfrac{210}{7} =30$

$30=30$

$3a) 3(x+1)=21$

Solve:

$3(x+1)=21\\3x+3=21\\3x=18\\x=6$

$3b) 2+3(x+1)=6x$

$2+3x+3=6x\\5=3x\\$

$x=\dfrac{5}{3}$

$3c) -2(2x-3)=-2$

Solve:

$-2(2x-3)=-2\\-4x+6=-2\\-4x=-8\\x=2$

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3 years ago

Solve each equation & show<br> 3) 36 = 1+ 7a

Sladkaya [172]

Answer:

a=5

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3 years ago

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Find the thirteenth term of an arithmetic sequence if the first term is 3 and the common difference is 3

lesya692 [45]

Answer:

Step-by-step explanation:

Formula for the nth term (an) = a1 + d(n - 1) where a1 = the first term and d = common difference.

So here the 13th term = 3 + 3(13 - 1)

= 3 + 3*12

= 39 (answer).

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3 years ago

A shoreline is eroding at a rate of 1/3 3 foot per 3 months. How many feet are eroding per year?

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7ft if 3+1/3 hopefully this helps i did hwat i can

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4 years ago

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Answer:

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3 years ago