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sashaice [31]
3 years ago
9

Please help quick i get brainliest

Mathematics
1 answer:
IrinaK [193]3 years ago
6 0
Question 1:
If you know that 3 squares equals 7 circles and the squares are being counted by 3, then continue to count the circle by 3 until you get 25 circles.
Example:
3 Squares : 7 circles
4 squares : 10 circles
5 squares : 13 circles 
6 squares : 16 circles
7 squares : 19 circles
8 squares : 22 circles
9 squares : 25 circles       Add 9 squares to 3 = 12
You will have 12 squares when continues to count all the way to 25 circles.

Question 2:
Just multiply 14 by 28 and you will get your answer. Which is 3. The missing digit's 3. You can then check by doing 392 ÷ 14 to see if you get 28.
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If you can please help thank you
zysi [14]

Answer:

d) 2x^2 + 2x -59

Step-by-step explanation:

(x-8)(x+4) + (x-3)(x+9) *multiply each term (...)(...)*

x^2 - 4x - 32 + x^2 + 6x -27 *combine like terms*

2x^2 +2x - 59

7 0
3 years ago
A researcher took a random sample of 100 students from a large university. She computed a 95% confidence interval to estimate th
katen-ka-za [31]

Answer:

Part (A): The correct option is true.

Part (B): The null and alternative hypothesis should be:

H_o: \mu =0 ; H_a:\mu \neq0

Step-by-step explanation:

Consider the provided information.

Part (A)

A random sample of 100 students from a large university.

Increasing the sample size decreases the confidence intervals, as it increases the standard error.

If the researcher increase the sample size to 150 which is greater than 100 that will decrease the confidence intervals or the researcher could produce a narrower confidence interval.

Hence, the correct option is true.

Part (B)

The researcher wants to identify that whether there is any significant difference between the measurement of the blood pressure.

Therefore, the null and alternative hypothesis should be:

H_o: \mu =0 ; H_a:\mu \neq0

7 0
3 years ago
A package of 8 pens costs $1.09. Milo’s work to find the unit price of the pack is shown below.
Anuta_ua [19.1K]
I think the answer is C. "He made a place value error when dividing. If he would have divided 1.09 by 8, he would have found the price of each individual pen.

4 0
3 years ago
Read 2 more answers
What is the greatest common factor of 10x and 22x“?
BartSMP [9]

Answer:

2x

Step-by-step explanation:

x and 2 are common to both 10x and 22x, so 10x + 22x = 2x(5 + 11)

The GCF is 2x.

4 0
3 years ago
How much alcohol is there in 30 liters of a 45% alcohol solution?
zaharov [31]

Answer:

Answer: 60%

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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