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3 years ago

7

Write an expression equal to

lt=" {7}^{3} " align="absmiddle" class="latex-formula">

1 answer:

expeople1 [14]3 years ago

3 0

Answer:

7×7×7

Explanation:

${7}^{3} = 7 \times 7 \times 7$

When a number is raised to a power, it means that the number is multiplying itself as many times as the number written as the power.

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At M & P’s Deli, two pastrami sandwiches and five sodas cost $12.65, while three pastrami sandwiches and two sodas also cost

Olegator [25]

Answer:

37.95

Step-by-step explanation:

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8 0

2 years ago

Given equations A and B as 2/5x+y=12 and 5/2y-x=6 respectively which expression will eliminate the variable X a) 5/2A+2/5B b)5/2

frutty [35]

Answer:

C) $A+\frac{2}{5}B$

Step-by-step explanation:

Given Equations:

A) $\frac{2}{5}x+y=12$

B) $\frac{5}{2}y-x=6$

In order to eliminate $x$ we need to multiply $\frac{2}{5}$ to equation B and add it to A.

Multiplying $\frac{2}{5}$ to B.

⇒ $\frac{2}{5}\times (\frac{5}{2}y-x)=\frac{2}{5}\times 6$

⇒ $(\frac{2}{5}\times\frac{5}{2}y)-(\frac{2}{5}x)=\frac{12}{5}$

⇒ $y-\frac{2}{5}x=\frac{12}{5}$

Adding it equation A.

$\frac{2}{5}x+y=12$

+ $-\frac{2}{5}x+y=\frac{12}{5}$

We get $2y=\frac{72}{5}$

Thus $x$ is eliminated.

So, the expression used to eliminate $x$ is:

$A+\frac{2}{5}B$

4 0

3 years ago

Jess had three more nickels than dimes for a total of $1.50 how many of each coin did he have

lara31 [8.8K]

N=d+3 because she has 3 more n than d

5n+10d=150

These are givin 5cents in a Nickel so it’s 5n
10 cents in a dime so it’s 10d
We need her to have 150

Now substitute what we know n to be
Into the equation and solve

5(d+3) + 10d = 150
5d + 15 + 10d = 150
15d + 15= 150
15d=135
D=9

Jess had 9 dimes and 12 nickels

3 0

3 years ago

Read 2 more answers

The missing exponent 1,728 =12 (?)

aleksandrvk [35]

Answer:

x=144

Step-by-step explanation:

3 0

3 years ago

3(x-5)=6 What is the answer?

seraphim [82]

Step-by-step explanation:

3(x - 5) = 6

x - 5 = 2 (divide 3 on both sides)

x = 7 (add 5 on both sides)

The solution is x = 7.

8 0

3 years ago

Read 2 more answers