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erastovalidia [21]

3 years ago

5

Please help!!!!!! Giving 10 points to each person

1 answer:

BARSIC [14]3 years ago

4 0

Answer:

it doesnt have an equation to solve

Step-by-step explanation:

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Can someone help me?

Pie

Answer:

x = 12 efg = 132

Step-by-step explanation:

3 0

3 years ago

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What’s the awnser to this mathematics equation

Anestetic [448]

Answer:

Half of 9

So 4.5

6 0

3 years ago

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There are 75 envelopes in a package. How many envelopes are there in 7 packages?

r-ruslan [8.4K]

<span>The question is asking us to calculate how many envelopes are there in 7 packages if there are 75 in a package. For example: in 1 package there are 75 envelopes. In 2 packages there are 7 * 2 = 150 envelopes. In general, formula is : 75 * n, where n is the number of packages. Therefore, we will multiply 75 by 7. 75 * 7 = 525. Answer: B ) 525 envelopes.</span>

8 0

4 years ago

You read online that a 15 ft by 20 ft brick patio would cost about $2,275 to have professionally installed. Estimate the cost of

VladimirAG [237]

Answer:

$4884 to the nearest $.

Step-by-step explanation:

By proportion it is 2275 * (23*28) / (15*20)

= $4884

3 0

3 years ago

Solve the equations by substitution method: A. 2x-y-3=0 and 3x+4y=65.

PSYCHO15rus [73]

Step-by-step explanation:

$\sf 2x-y-3=0\dots \dots (1)$

$\sf 3x+4y=65 \\ \implies\sf 3x+4y-65=0 \dots\dots(2)$

from eq (1)

${:}\longrightarrow$ $\sf 2x-y-3=0$

${:}\longrightarrow$ $\sf 2x-3=y$

${:}\longrightarrow$ $\sf y=2x-3 \dots\dots(3)$

Substitute the value in eq(2)

${:}\longrightarrow$ $\sf 3x+4y-65=0$

${:}\longrightarrow$ $\sf 3x +4 (2x-3)-65=0$

${:}\longrightarrow$ $\sf 3x+8x-12-65=0$

${:}\longrightarrow$ $\sf 11x-77=0$

${:}\longrightarrow$ $\sf 11x=77$

${:}\longrightarrow$ $\sf x={\dfrac {77}{11}}$

${:}\longrightarrow$ $\sf x=7$

Substitute the value in eq (3)

${:}\longrightarrow$ $\sf y=2x-3$

${:}\longrightarrow$ $\sf y=2 (7)-3$

${:}\longrightarrow$ $\sf y=14-3$

${:}\longrightarrow$ $\sf y=11$

$\therefore$ ${\underline{\boxed{\bf (x,y)=(7,11)}}}$

7 0

3 years ago