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pav-90 [236]
3 years ago
7

1. Sarah and Maya both need notebooks and pencils. The equation that represents Sarah's

Mathematics
2 answers:
STALIN [3.7K]3 years ago
8 0

Step-by-step explanation:

We have y = 13 - 3x and y = 7 - x.

=> 13 - 3x = 7 - x

=> 2x = 6, x = 3.

Then y = 7 - (3), y = 4.

Hence the price of a pencil is $3 and the price of a notebook is $4. (C)

777dan777 [17]3 years ago
5 0

answer is c) pencils: $3 notebook: $4 go to card 5

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Solve the following equations.<br> log6(x) = 1
Ksenya-84 [330]

Answer:

x = 6

Step-by-step explanation:

Given:

log₆(x) = 1

Now,

From the properties of log

logₓ (z)= \frac{\log(z)}{\log(x)}  (where the base of the log is equal for both numerator and the denominator)

also,

log(xⁿ) = n × log(x)

thus,

using the above properties, we can deduce the results as:

logₓ(y) = n is equivalent to y = xⁿ

therefore,

the given equation can be deduced as:

log₆(x) = 1

into,

x = 6¹

or

x = 6

7 0
3 years ago
A human resources representative claims that the proportion of employees earning more than $50,000 is less than 40%. To test thi
bearhunter [10]

Answer:

The statistic for this case would be:

z=\frac{\hat p -p_o}{\sqrt{\frac{\hat p(1-\hat p)}{n}}}

And replacing we got:

z= \frac{0.436-0.4}{\sqrt{\frac{0.436*(1-0.436)}{700}}}= 1.92

Step-by-step explanation:

For this case we have the following info:

n =700 represent the sample size

X= 305 represent the number of employees that earn more than 50000

\hat p=\frac{305}{700}= 0.436

We want to test the following hypothesis:

Nul hyp. p \leq 0.4

Alternative hyp : p>0.4

The statistic for this case would be:

z=\frac{\hat p -p_o}{\sqrt{\frac{\hat p(1-\hat p)}{n}}}

And replacing we got:

z= \frac{0.436-0.4}{\sqrt{\frac{0.436*(1-0.436)}{700}}}= 1.92

And the p value would be given by:

p_v = P(z>1.922)= 0.0274

4 0
4 years ago
Charlotte is visiting Brazil and is looking at souvenirs to purchase. She finds a jersey that costs 137 Brazilian real. If the c
aleksandrvk [35]

The cost of the jersey with a price of 89 Brazilian real in U.S. dollars is $25.230.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

Independent variables represent function inputs that do not depend on other values, while dependent variables represent function outputs that depends on other values.

1 dollar = 5.43 Brazilians real

137 Brazilian real = 137/5.43

= $25.230

Hence, The cost of the jersey is $25.230

Learn more about equation here:

brainly.com/question/2972832

#SPJ2

5 0
1 year ago
Read 2 more answers
Iliana is painting a picture. She has green, red, yellow, purple, orange, and blue paint. She wants her painting to have four di
erma4kov [3.2K]

Answer: i think it's the last option

15

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Write 9x+3 in factored form.
Natali5045456 [20]
9x + 3
= 3 ( 3x + 1 )
3 0
4 years ago
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