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Gala2k [10]
3 years ago
7

7 times the sum of a number and 4 is the same as 8 decreased by 3 times the number. Find the number

Mathematics
2 answers:
Marrrta [24]3 years ago
4 0

Answer:

7(x4) = 8-x

Step-by-step explanation:

daser333 [38]3 years ago
3 0

Answer:

x= -2

Step-by-step explanation:

7(4+x)=8-3x would be your equation

your first step would be to move your 3x to the other side of the equation by adding 3x to both sides after this your equation should look as follows: 7(4+x)+3x=8 2nd: you should distribute your 7 to the numbers inside of the parenthsis and combine like terms to get 10x+28=8 then you move your 28 to the other side by subracting 28 and you will get 10x=-20 divide by ten to get the answer which is x=-2

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harry invests £6000 in a savings account. the account pays 3.4% compound interest per year. work out the value of his investment
Nataly_w [17]

Invested amount (P0 = £6000.

Rate of interest (r) = 3.4% = 0.034.

We know compound interest formula

A = P(1+r)^t

We need work out the value of his investment per year.

So, we need to plug t=1 and plugging values of P and r in the formula above, we get

A = 6000(1+0.034)^1

A = 6000(1.034)

A = 6204.

<h3>Therefore, the value of his investment per year is £ 6204.</h3>

Now, we need to work out the value of his investment after 3 years.

So, we need to plug t=3.

A = 6000(1+0.034)^3

A = 6000(1.034)^3

1.034^3=1.105507304

A = 6000 × 1.105507304

A = 6633.04

<h3>Therefore, the value of his investment after 3 year is  £ 6633.04.</h3>
6 0
2 years ago
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snow_tiger [21]

Answer:

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Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
A man standing on level ground is 1000 feet away from the base of a 350-foot-tall building. Find,
CaHeK987 [17]

If you sketch the man and the building on paper, you'll have a
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We need to find the angle at his feet, between the hypotenuse
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Well, the side opposite the angle is the height of the building -- 350ft,
and the side adjacent to the angle is the distance from him to the
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The tangent of the angle is      (opposite) / (adjacent)

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To find the angle, use a book, a slide rule, a Curta, or a calculator
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3 0
3 years ago
(-1) power 50 is what
Tcecarenko [31]

(-1) to the power of an even number is +1.

(-1) to the power of an odd number is -1.

Since 50 is an even number, (-1)⁵⁰ = 1.

7 0
11 months ago
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Anastaziya [24]
Set each binomial equal to zero to solve. 

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6 0
3 years ago
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