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2 years ago

What is the value of the expression below when a = 4?

1 answer:

6 0

So if a = 4 we can substitute the value of the variable into the function
So if a = 4
Then in the equation
6a + 7
We substitute a for 4 which gets

6(4) + 7

24 + 7

31
There for the answer is A

Hope this helps!

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The Boy Scouts are selling popcorn at the parade to raise money for their camping trip. Ethan sold 9 small bags and 2 large bags

myrzilka [38]

Answer:

The cost of a small bag of popcorn is $\$2.95$

The cost of a large bag of popcorn is $\$4.75$

Step-by-step explanation:

Let

x----> the cost of a small bag of popcorn

y----> the cost of a large bag of popcorn

we know that

$9x+2y=36.05$ ----> equation A

$5x+7y=48$ ----> equation B

Solve the system of equations by graphing

Remember that the solution of the system of equations is the intersection point both graphs

The solution is the point (2.95,4.75)

see the attached figure

therefore

The cost of a small bag of popcorn is $\$2.95$

The cost of a large bag of popcorn is $\$4.75$

7 0

4 years ago

RST with vertices R(–2, 3), S(1, 2), and T(2, –1) is rotated 270° counterclockwise about the origin.

photoshop1234 [79]

Answer:

vertices are rotation by 270° about the origin

R¹( 3, 2), S¹( 2, -1) and T¹ (-1,- 2)

Step-by-step explanation:

<u><em>Explanation:-</em></u>

The rule for a rotation by 270° about the origin is

( x,y) → (y,-x)

Given vertices are R(–2, 3), S(1, 2), and T(2, –1)

Given vertices are rotation by 270° about the origin

R¹( 3,-(-2)) , S¹( 2 , -1) and T¹ (-1 , -(2))

R¹( 3, 2), S¹( 2,-1) and T¹ (-1,- 2)

3 0

3 years ago

What is the value of the expression when a = –4 and b = 5?

Annette [7]

$(a+2b)^3 + 3a^2\\\\=(-4+2(5))^3 + 3(-4)^2\\\\=(-4+10)^3 +3(16)\\\\=6^3 + 3(16)\\\\=216 + 48\\\\=\boxed{\bf{264}}$

Your answer is B) 264.

3 0

3 years ago

In ΔRST, s = 58 inches, ∠R=115° and ∠S=19°. Find the length of r, to the nearest 10th of an inch.

Lorico [155]

Answer:

365.9 Inches

Step-by-step explanation:

To find the value of Sin A can be found using the sine rule. the rule states that the ratio of the length facing an angle in a triangle to the sine of the angle is constant. As such,

a/Sin A = b/Sin B = c/Sin C

Where is a is the side facing angle A, b is the side facing angle B and c is the side facing angle C.

Hence,

58/Sin 19 = r/Sin 115

r = 58 Sin 115/ Sin 19

= 365.9 Inches

8 0

4 years ago

Y=x^2-2x-5;y=x^3-2x^2-5x-9

ehidna [41]

Are the directions asking you to solve these ?

8 0

3 years ago