3 years ago

Rachel, Tammy, and Bryan all bought something at the mall. Rachel's necklace cost 20% more than Tammy's shoes.

1 answer:

3 0

Tammy's shoes cost $ 30

Rachels necklace cost 20% more then Tammy's shoes....20% more then 30......30(1.20) = $ 36

Bryans video cost 30% more then Rachels necklace....30% more then 36...36(1.30) = $ 46.80 <===

You might be interested in

Question 2 of 5

Tanzania [10]

B. 47

Hope this helps!!!

7 0

2 years ago

Read 2 more answers

A potential buyer of the breed of snake known as a rattlesnake wishes to find the average weight and length of a full-grown rept

BlackZzzverrR [31]

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

X2 + 4x - 9 = 5x + 3 O A. 4 O B. -3 O C. -7 O D. 5 E. -2 F-4

elena-14-01-66 [18.8K]

Answer:

${x}^{2} + 4x - 9 = 5x + 3 \\ {x }^{2} - x - 12 \\ {x}^{2} - 4x + 3x - 12 \\ x(x - 4) + 3(x - 4) \\ (x - 4)(x + 3) \\ x = 4 \: and - 3$

7 0

2 years ago

A university is interested in promoting graduates of its honors program by establishing that the mean GPA of these graduates exc

den301095 [7]

Step-by-step explanation:

Population Mean (u) = 3.50

Sample (n)= 36

Sample mean (x) = 3.60

Population standard deviation (s)= 0.40

Test statistics:

(Null hypothesis) H0: u= 3.5 (Population mean is equal to 3.5)

(Alternate hypothesis) H1: u> 3.5 (Population mean is greater than 3.5)

Z= $\frac{x-u}{\frac{s}{\sqrt{n} } }$ = $\frac{3.60-3.50}{\frac{0.4}{\sqrt{36} } }$ = $\frac{0.10}{0.067}$ = 1.5

critical value= Z0.05= 1.645 (From Z table)

Since, Z value is less than critical Z value that is Z<1.645

We cannot reject null hypothesis

So, we decide to reject that the mean GPA of graduates exceeds 3.50

3 0

2 years ago

sam has 12 black and white photos and18 color photos.he wants to put the photos in equal rows so each row has either black and w

aalyn [17]

216 you multiply 12 by 18. Hope it helped!!!!!

5 0

3 years ago