3 years ago

Which value for x makes the sentence true? 3/4x + 4 = 7

Mathematics

1 answer:

gtnhenbr [62]3 years ago

8 0

Answer:

Step-by-step explanation:

when you subtract the 4, you end up with 3/4x=3. so you divide by 3/4 and you get 4.

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the first term of an arithmetic sequence is 10 and the sum of the first five terms is 250,find the sequence

Crazy boy [7]

Answer:

The sequence is:

10, 30, 50, 70, 90.....................

Step-by-step explanation:

We have,

First term (a) = 10

Common difference (d) = ?

Sum of first 5 terms ( $S_{5}$ ) = 250

or, $\frac{n}{2} [{2a+(n-1)d}] = 250$

or, $\frac{5}{2} [2*10 + 4d]=250$

or, $\frac{5}{2} * 4[5+d]=250$

or, 10(5 + d) =250

or, 5 + d = 25

∴ d = 20

Now,

2nd term = a + d = 10 + 20 = 30

3rd term = a + 2d = 10 + 2*20 = 10 + 40 = 50

4th term = a + 3d = 10 + 3*20 = 10 + 60 = 70

5th term = a + 4d = 10 + 4*20 = 10 + 80 = 90

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3 years ago

You are a mechanic. You have been given an engine job time of 0.7 hour about how many minutes should you allow for the job

vitfil [10]

I would allow 42 minutes for the job

6 0

3 years ago

Please help me idk this

KiRa [710]

Answer:

$x=128$

Step-by-step explanation:

x and 52 are supplementary, so they add up to 180°

$x+52=180\\x=128$

6 0

3 years ago

Read 2 more answers

Identify the correct equation for the graph below.

SashulF [63]

i think it is c

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2 years ago

What is the product of (2x + 5x-3) and (x+7)?

LenaWriter [7]

Answer:

7x^3+46x^2-21x

"^" means exponet

Step-by-step explanation:

3 0

3 years ago