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KIM [24]
2 years ago
12

Evaluate -5x+8 when x=3 The value of the expression is

Mathematics
2 answers:
Effectus [21]2 years ago
3 0

Answer:

-7

Step-by-step explanation:

replace x by 3

-5^3+8

-15+8

=-7

Lostsunrise [7]2 years ago
3 0
The answer is -7
-5x+8
-5(3)+8
-15+8
-17
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AABC is similar to AAXY by a ratio of 3.2. If BC = 24, what is the length of XY?
dusya [7]

Answer:

XY = 16

Step-by-step explanation:

The ratio is 3 to 2 meaning that the sides of the triangle ABC and triangle AYY are in a ratio of 3 to 2.   You are comparing the big triangle to the small triangle and the sides are compared the same way.

3:2 = 24:XY                  

 3/2 = 24/XY

 3 XY = 48

 XY = 48/3

  XY = 16

5 0
3 years ago
Write an equation in slope- intercept form for the line with slop-1/4 and y-intetcept 5
Rashid [163]
Y=mx+b
m=slope
b=yintercept

given
slope=-1/4
yint=5

y=-1/4x+5
6 0
3 years ago
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The drama club at Math Academy High School sold tickets to their end of the year play. On Monday they sold 80 tickets for a tota
riadik2000 [5.3K]

Answer: OPTION A

Step-by-step explanation:

Let be "a" the number of adults tickets they sold and "s" the number student of tickets they sold.

With the information given in the exercise you can set up the following System of equations:

\left \{ {{a+s=80} \atop {6a+4.5s=426}} \right.

Use the Elimination method to solve the system of equations:

1. Multiply the first equation by -6.

2. Add the equations.

3. Solve for "s" in order to find its value.

Then:

\left \{ {{-6a+-6s=-480} \atop {6a+4.5s=426}} \right.\\............................\\-1.5s=-54\\\\s=36

4. Finally, substitute the value of "s" into the first equation and solve for "a":

a+36=80\\\\a=80-36\\\\a=44

3 0
4 years ago
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Andrej [43]
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7 0
4 years ago
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lauren is designing a metal sculpture that contains a triangle with sides of 4 inches and 11 inches. She is trying to determine
lesya692 [45]

Answer:

7 < x

Step-by-step explanation:

Let

x ----> the length of the third side of triangle in Lauren's sculpture

we know that

The <u><em>Triangle Inequality Theorem</em></u> states that the sum of any 2 sides of a triangle must be greater than the measure of the third side

Applying the Triangle inequality Theorem

1) 4+11 > x

15 > x

Rewrite

x< 15\ in

2) 4+x > 11

x> 11-4\\x> 7\ in

therefore

The possible values of x are

7\ in < x

4 0
3 years ago
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