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tatiyna
2 years ago
8

What is the value of x in this equation? 5 + x = 13 a. x=13 b.x=18 c. x=7 d. x=8

Mathematics
2 answers:
Ksenya-84 [330]2 years ago
6 0
D
X=8

5+x=13
-5 from both sides
X=8
Scilla [17]2 years ago
4 0
The answer is d. x=8

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Arjun sells handmade ceramic mugs he Mark's them up by 60% to make a profit they cost $8 in materials how much do this mugs cost
Reptile [31]

Answer:

$12.80

Step-by-step explanation:

Before markup: $8

After markup: $8 x 160% = $12.80

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6 0
2 years ago
What is the measure of XYZ​
lorasvet [3.4K]

Answer:

B

Step-by-step explanation:

The arc XZ is twice the measure of the inscribed angle XYZ , that is

arc XZ = 2 × 60° = 120°

The complete circumference = 360° , thus

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6 0
3 years ago
Read 2 more answers
I dont know please help and show your work
Phoenix [80]
Area=6x10=60 feet as it is rectangle so all angles are 90° and oppossite sides are equal
4 0
3 years ago
In a study, researchers wanted to measure the effect of alcohol in the development of the hippocampal region in adolescents. The
lbvjy [14]

Answer:

Kindly check explanation

Step-by-step explanation:

Given :

Sample size, n = 30

Tcritical value = 2.045

Null hypothesis :

H0: μ = 9.08

Alternative hypothesis :

H1: μ≠ 9.08

Sample mean, m = 8.25

Samole standard deviation, s = 1.67

Test statistic : (m - μ) ÷ s/sqrt(n)

Test statistic : (8.25 - 9.08) ÷ 1.67/sqrt(30)

Test statistic : - 0.83 ÷ 0.3048988

Test statistic : - 2.722

Tstatistic = - 2.722

Decision region :

Reject Null ; if

Tstatistic < Tcritical

Tcritical : - 2.045

-2.722 < - 2.045 ; We reject the Null

Using the α - level (confidence interval) 0.05

The Pvalue for the data from Tstatistic calculator:

df = n - 1 =. 30 - 1 = 29

Pvalue = 0.0108

Reject H0 if :

Pvalue < α

0.0108 < 0.05 ; Hence, we reject the Null

4 0
2 years ago
For a triangle to be classified as equilateral, what must all three angles measure? Do not include the degree symbol in your
OleMash [197]

Answer:

I think the answer is 60.

8 0
3 years ago
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