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3 years ago

Evaluate the given expression for x = 4 and y= 3. 7x2 + 6xy + 6y?The answer is: _____

Mathematics

1 answer:

Alex Ar [27]3 years ago

8 0

Answer:

104

Step-by-step explanation:

x=4 ; y=3

7×2 +6xy+6y

7×2+6(4)(3)+6(3)

14+72+18

104

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A high school has 900 students. In a

postnew [5]

Answer:

135

Step-by-step explanation:

simply You're asked 15% of 900 so

900 x 15/100 =135

6 0

3 years ago

What addition doubles fact can help you find 4+3? Explain how you know.

Anarel [89]

Sorry idk sorry............................................

5 0

3 years ago

Last year the depth of the river was 4.2 feet deep. This year it dropped 25%. Find the depth of the river this year to cross it.

Novosadov [1.4K]

Answer:

The river is 3.15 feet deep.

Step-by-step explanation:

First let's recognize what we need to find: the depth of the river

We know last year the river was 4.2 feet deep, but it dropped 25%. This means we also need to find how much it dropped. To find this, we need to know what 25% of 4.2 is. Write an equation for this.

y = 25% of 4.2

y = 0.25 • 4.2

y = 1.05

This means that the river dropped 1.05 feet. To know its depth now, we need to subtract 1.05 from 4.2. Write an equation for this.

d = 4.2 - 1.05

d = 3.15

The river is 3.15 feet deep.

Hope this helps!

4 0

3 years ago

6. Write an equation of a line that is Parallel to the line: y = 3x -3

jeka94

Answer:

3x - y -6 = 0

Step-by-step explanation:

We need to find the Equation of the line parallel to the given equation of line . The given equation of the line is ,

$\rm\implies y = 3x - 3$

Slope Intercept Form :-

$\rm\implies y = mx + c$

where ,

m is slope
c is y intercept .

Therefore , the Slope of the line is 3 . Let the parallel line passes through ( 3,3) . We know that the parallel lines have same slope . Therefore the slope of the parallel line will also be 3 .

Using point slope form :-

$\rm\implies y - y_1 = m ( x - x_1) \\\\\rm\implies y - 3 = 3( x - 3 ) \\\\\rm\implies y -3 = 3x -9 \\\\\rm\implies 3x -y -9+3=0\\\\\rm\implies \boxed{\rm\red{ 3x -y -6=0}}$

3 0

3 years ago

the 3 sides of triangle are n, 4n + 1 , 5n- 8. if the perimeter of the triangle is 93 cm, what is the length of each side?

REY [17]

Answer:

10, 41, 42

Step-by-step explanation:

(n)+(4n+1)+(5n-8)=93 because triangle perimeter

10n-7=93

10n=100

n=10

7 0

2 years ago

Read 2 more answers

Evaluate the given expression for x = 4 and y= 3. 7x2 + 6xy + 6y?The answer is: _____​

Evaluate the given expression for x = 4 and y= 3. 7x2 + 6xy + 6y?The answer is: _____