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3 years ago

Mx+nx=p solve for x please

Mathematics

1 answer:

Irina-Kira [14]3 years ago

5 0

X(m+n) = p
x = p/(m+n)

Hope this helps!

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A rectangular floor is 12 ft wide and 18 ft long. How much will it cost to carpet the floor if the carpet costs $1.39 per square

Oliga [24]

It will cost 300.24$ =12*18*1.39

4 0

3 years ago

Solve the system by substitution.<br> y = -7x. y = -5x + 10

ohaa [14]

Answer: (-5,35)

Step-by-step explanation:

-7x=-5x+10

Get x on one side by adding 5x

-2x=10

Simplify by dividing by -2

X=-5

Substitute into y=-7x

Y=-7(-5)

Simplify

Y=35

5 0

3 years ago

Alexa has some dimes and some quarters. She has a minimum of 28 coins worth a maximum of $5.05 combined. If Alexa has 17 quarter

Lerok [7]

Answer:

There are no possible solutions

Step-by-step explanation:

Given:

Minimum number of coins Alexa has =28 coins

Number of quarters Alexa has = 17 quarters

Total amount in coins = $5.05 = 505 cents

Let number of dimes be = $x$ coins

So we can have two inequalities.

1) Total number of coins

$x+17\geq28\\$ [Since minimum number of coins=28]

2) Total value of coins

$10x+(25)(17)\leq505$ [As 1 dime=10 cents and 1 quarter=25 cents]

$10x+425\leq505$

Solving inequality (1)

Subtracting both sides by 17.

$x+17-17\geq28-17$

∴ $x\geq 11$

Solving inequality (2)

Subtracting both sides by 425.

$10x+425-425\leq505-425$

$10x\leq 80$

Dividing both sides by 10.

$\frac{10x}{10}\leq \frac{80}{10}$

∴ $x\leq 8$

On combining both solutions

$x\geq 11$ and $x\leq 8$ ,

we see that there are no possible solutions as number of dimes cannot be ≥11 and ≤8 at the same time.

7 0

3 years ago

Could someone help me with this?? thanks!

ANEK [815]

Answer:

Step-by-step explanation:

1/4 ( x+10) = x -4

one fourth the sum of x and 10 is identical to x minus 4

5 0

3 years ago

What is the value of − 9 × ( 1 4 ) ÷ ( − 0.75 ) ?

andre [41]

Answer: 168

Step-by-step explanation:

1. -9 * 14 = -126

2. -126/ -0.75 = 168

8 0

3 years ago