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Verdich [7]
3 years ago
8

Matt makes 5 bookcases in 8 days. What is his unit rate? I thought i had it but i didn't can someone help me please!!

Mathematics
2 answers:
Tpy6a [65]3 years ago
7 0
1.6 days per book case. 8 days \ 5 book cases = 1.6 days per book case. He is correct unless it is 5\8 then the answer is different although he seems right
Anestetic [448]3 years ago
4 0


1.6 days per book case. 8 days \ 5 book cases = 1.6 days per book case.
 

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If the area of traingle TQR is 60 cm square,what is the area of the parallelogram PQRS?<br>​
Stolb23 [73]

Answer:

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8 0
2 years ago
Solve 12x<br>x + 16 - 1 = 0<br>​
zhuklara [117]

Answer:

xx=-0.8

Step-by-step explanation:

not sure if this is right because the 12xx is kind of strange

12xx+16-1=0
12xx+15=0
12xx=-15
12/12xx=12/-15
xx=-.8

5 0
2 years ago
What does it mean if diagonals are perpendicular?
rodikova [14]

Answer:

they form a 90 degree angle

Step-by-step explanation:

perpendicular (⊥) always implies 90 degree angles

parallel (║) always implies they never intersect

5 0
3 years ago
A marketing research company desires to know the mean consumption of meat per week among males over age 50. A sample of 217 male
guajiro [1.7K]

Answer: (3.3, 3.5)

Step-by-step explanation:

The formula to calculate the confidence interval is given by :-

\overline{x}\pm z^* \dfrac{\sigma}{\sqrt{n}}

, where \overline{x} = sample mean.

z* = critical value.

\sigma = Population standard deviation.

n= Sample size.

As per given , we have

\overline{x}=3.4

\sigma=0.5

n= 217

By using z-table , the critical value for 95% confidence level : z* = 1.96

Now, the  95% confidence interval for the mean consumption of meat among males over age 50 will be :

3.4\pm (1.96) \dfrac{0.5}{\sqrt{217}}

3.4\pm (1.96) \dfrac{0.5}{14.73091986}

3.4\pm (1.96) 0.0339422

3.4\pm 0.066526712\approx3.4\pm 0.1=(3.4-0.1,\ 3.4+0.1)=(3.3,\ 3.5)

Hence, the 95% confidence interval for the mean consumption of meat among males over age 50 =(3.3, 3.5)

4 0
3 years ago
Which of the following is a like radical to 3 sqrt 7x?
san4es73 [151]

Answer:

Options A and B

i.e., A. 4(3\sqrt{7x}) and B. \sqrt{7x}

Step-by-step explanation:

Like radicals are similar to like terms.

For example,

x, 2x, -10x, \frac{1}{2} x, 7.3x are like terms.

xy^{2} , -9xy^{2} , 13y^{2} x are some more examples of like terms.

Similarly, like radicals are:

\sqrt{2} , -5\sqrt{2} , 1.1\sqrt{2} etc.

Hence, from the given options, like radicals to 3\sqrt{7x} are:

A. 4(3\sqrt{7x} ) and B. \sqrt{7x}

6 0
4 years ago
Read 2 more answers
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