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3 years ago

Evaluate the expression if x = 3 and y = 6. 4x + 3y

Mathematics

2 answers:

Elena L [17]3 years ago

7 0

Answer:

Step-by-step explanation:

Evaluate the expression if x = 3 and y = 6.

4x + 3y

The value of x is 3 and the value of y is 6

The given expression is $4x+3y$

Now we plug in the value of x and y in the given expression

$4x+3y$

$4(3)+3(6)$

$12+18=30$

So the value of the given expression is 30

mylen [45]3 years ago

3 0

Here, Just substitute their values,
4x + 3y
= 4(3) + 3(6)
= 12 + 18
= 30

In short, Your Answer would be 30

Hope this helps!

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Is 4y^2 + 9 = -4 a linear equation?

bekas [8.4K]

Answer:

No.

Step-by-step explanation:

The exponent of y is 2, which is not 1, so the equation is 2nd degree, not linear (1st degree).

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3 years ago

in triangle ABC shown below, L is the midpoint of BC, M is the midpoint of AB, and N is the midpoint of AC. Find the perimeter o

alexdok [17]

since m and n are the midpoints of ab and ac resistively

then ,bc=2mn=16

since m and l are the midpoints of ba and bc respectively

then, ac =2mn =10

then,nc =1/2 × 10 =5

similary, mb=6

then ,perimeter=nc+mb+mn+bc=5+6+8+16=35

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3 years ago

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Kipish [7]

Answer:

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2 years ago

Find the solution of the system of equations. 6x + 8y = -8 x + 4y = 4 ( , )

ladessa [460]

Answer:

the solution is (-4, 2)

Step-by-step explanation:

6x + 8y = -8

x + 4y = 4

... can be solved using elimination by addition and subtraction, among other methods. Multiply the second equation by -2 to obtain

6x + 8y = -8

-2x - 8y = -8

Combining these results in

4x = -16. Thus, x = -4.

Substituting -4 for x in x + 4y = 4 results in

-4 + 4y = 4, or 4y = 8, or y = 2

Then the solution is (-4, 2)

8 0

3 years ago

Camellia earned $160 over the summer. If you put 80% of earnings into her savings account and spent 75% of the rest on a gift fo

In-s [12.5K]

Answer: She has left over $8.

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

Camellia earned $160 and you put 80% of earnings into her savings account:

So, to obtain this number we have to multiply Camellia's earnings by 0.80 (the percentage in decimal form, 80 /100 = 0.80)

$160 x 0.80 = $128 (savings)

If we subtract the number obtained to Camellia's earnings:

$160 -$128 = $32 (money left without purchasing a gift)

She spent 75% of the rest on a gift for her

The rest is $32, so we have to multiply it by the percentage in decimal form (75/100=0.75)

$32 x 0.75 (decimal form) = $24

And finally, subtract that number to the original rest.

$32-$24 = $8

She has left over $8.

7 0

3 years ago

Read 2 more answers