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Zinaida [17]
2 years ago
10

The mean of Alice's last 5 math test scores is 88. The first 4 of these 5 math test scores were 87, 75, 93, and 85. What score d

id Alice earn on her fifth math test?
Mathematics
1 answer:
stiks02 [169]2 years ago
6 0

Answer:

Step-by-step explanation:

x is the score she got on the fifth test.

Since her average score is 88, the sum of all five tests is 5×88.

x + 87 + 75 + 93 + 85 = 5×88 = 440

x = 440 -  87 - 75 - 93 - 85

x = 100

She got a 100 on her fifth test.

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What is the true solution to the logarithmic equation below?<br> log₂ (6x)-log₂ (√x)=2
slega [8]

Answer:

The true solution is x=4/9

EXPLANATION

The logarithmic equation given to us is

We need to use the quotient rule of logarithms.

When we apply this law the expression becomes

We now take the antilogarithm of both sides to get

We square both sides to get,

We evaluate to obtain,

This simplifies to

We divide both sides by 36 to get

We simplify to get,

6 0
2 years ago
Read 2 more answers
Assume that a, b, and c are sides of a right triangle as shown in this picture. If side a = 27 cm and side c = 45 cm, use the Py
exis [7]

Answer:

36

Step-by-step explanation:

b= √(c²-a²)

b= √(45²-27²)

b= √(2025-729)

b= √(1296)

b= 36

5 0
3 years ago
What is the answer to -8x-9&gt;-21
dybincka [34]
<h3>:- Solution</h3>

-8x - 9 > -21

Move -9 to right side

-8x > -21 + 9

-8x > -12

x < -12/-8

x < 3/2

the answer to -8x - 9 > -21 is <u>x</u><u> </u><u><</u><u> </u><u>3</u><u>/</u><u>2</u>

3 0
3 years ago
Carly has 5 times as many markers as camden.Toegether they have 30 markers.How many markers does Carly have? How many markers do
sweet-ann [11.9K]
Carly has 5 and Camden has 6

5x6=30
3 0
3 years ago
Read 2 more answers
1A-MATH
Andrej [43]

Answer:

Value of x = 20°

Angle B = 60°

Exterior angle to B = 300°

Step-by-step explanation:

Given:

Angles of triangle.

A = 2x

B = 3x

C = 4x

We know that,

A + B + C = 180°

2x + 3x + 4x = 180°

9x = 180°

x = 20°

Value of x = 20°

Angle B = 3x

Angle B = 3(20°)

Angle B = 60°

Exterior angle to B = 360° - 60°

Exterior angle to B = 300°

3 0
3 years ago
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