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myrzilka [38]
3 years ago
11

Solve this equation for A:A ÷ 2 = 4        A. 2   B. 6   C. 8   D. 4

Mathematics
2 answers:
KATRIN_1 [288]3 years ago
7 0
Answer is c:8 A=8 so 8 divided by 2 =4
algol133 years ago
6 0

Answer:

C) 8

Step-by-step explanation:

A ÷ 2 = 4

Get the 2 and 4 on the same side of the equal sign

A = 2 * 4

Multiply

A = 8

:)

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The accuracy of a coin-counter machine is gauged to accept nickels with a mean diameter of millimeters 21.21 mm. A sample of 37
umka2103 [35]

Answer:

μ > 21.21

Test statistic = 1.217

Kindly check explanation for more details

Step-by-step explanation:

The null hypothesis, H0 : μ = 21.21

Alternative hypothesis, H1 : μ > 21.21

The test statistic :

(xbar - μ) ÷ (s/sqrt(n))

(21.212 - 21.21) ÷ (0.01 / √2)

= 1.217

The critical value :

From the t distribution :, one tailed = 2.434

Decision region :

Reject H0 if test statistic > critical value

1.217 < 2.434 ; We fail to reject the null ` ; and conclude that there is not enough evidence to support the claim.

6 0
3 years ago
A bottle of shampoo was on sale for $6.45.
schepotkina [342]

Answer:

$7 for the first question

$6.50 for the last one

4 0
3 years ago
Find the smallest value of $x$ such that $x^2 + 10x + 25 = 8$.
Mashutka [201]

Answer:

-5 -√8  or ≈ -7.83

Step-by-step explanation:

<u>Solving the quadratic equation, to find its roots:</u>

  • x^2 + 10x + 25 = 8           ⇒ The left side is perfect square
  • (x+5)^2=8                         ⇒ Getting square root of both sides
  • x+5 = ± √8                       ⇒ There are 2 roots
  • x = - 5 ± √8

<u>The smallest root is:</u>

  • x= -5 - √8 ≈ -7.83
3 0
4 years ago
&lt;a and &lt;b are complementary angles. &lt;a measures 22<br>What is the measure of &lt;b?​
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6 0
3 years ago
The number of pounds of dog food that a pet store has is represented by the equation y = negative 15 x + 430, where x represents
sertanlavr [38]

Answer:  B) 115 pounds

Step-by-step explanation:

Because x is the number of days passed, after 21 days, x = 21.

y = -15(21)+430\\\\Multiply\\\\y = -315+430\\\\y=115

Hope it helps <3

6 0
3 years ago
Read 2 more answers
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