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3 years ago

the sum of the digits of a certain two digits number is 7. reversing its digit increases by nine what is the number

Mathematics

1 answer:

vodka [1.7K]3 years ago

5 0

34 flipped is 43
34+9=43
3+4=7

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Three desks and a bookcase together weigh 157Ib the bookcase weighs 34Ib how much does each desk weigh

Fantom [35]

Desk weight = d
Bookcase weight = b
b = 34
3d + b = 157
3d + 34 = 157
D = 41

5 0

3 years ago

What is 34 divided by 86.465

arsen [322]

Rounded up to 0.4

ffffffffff

8 0

3 years ago

Rewrite as a sum<img src="https://tex.z-dn.net/?f=%282x%5E2-11%29%28x%5E2%2B2%29" id="TexFormula1" title="(2x^2-11)(x^2+2)" alt=

VashaNatasha [74]

Answer:

Step-by-step explanation:

(2x^2-11)(x^2+2)

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3 0

3 years ago

Two times x is 8 more than y. The sum of x and two times y is 14. Write two equations and graph to find the value of y.

Sauron [17]

Option B: $y=4$ is the value of y

Explanation:

It is given that "Two times x is 8 more than y". Writing it as expression, we have,

$2x=8+y$

It is also given that "The sum of x and two times y is 14". Writing it as expression, we have,

$x+2y=14$

To find the value of y, let us solve the two equations using substitution method.

From the equation $2x=8+y$ , let us find the value of x.

$x=\frac{8+y}{2}$

$x=\frac{8}{2} +\frac{y}{2}$

$x=4+\frac{y}{2}$

Now, substituting $x=4+\frac{y}{2}$ in the equation $x+2y=14$ , we get,

$4+\frac{y}{2}+2y=14$

$4+\frac{5y}{2} =14$

$\frac{5 y}{2}=10$

$5y=20$

$y=4$

Thus, the value of y is $y=4$

8 0

3 years ago

Sweet t saved 20% of the total cost of the green-eyed fleas new album let three be fleas on the earth .If the regular price is $

Ostrovityanka [42]

Answer:

$6 Sweet t saved on green-eyed fleas new album .

Step-by-step explanation:

As given

Sweet t saved 20% of the total cost of the green-eyed fleas new album .

.If the regular price is $30.

20% is written in the decimal form.

$= \frac{20}{100}$

= 0.20

Thus

Sweet t saved on green-eyed fleas new album = 0.20 × 30

= $6

Therefore $6 Sweet t saved on green-eyed fleas new album .

5 0

3 years ago