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Artyom0805 [142]
3 years ago
11

Please explain step by step I dont get it.

Mathematics
2 answers:
BabaBlast [244]3 years ago
5 0

Answer:

B (-3 x 2)

Step-by-step explanation:

Think about it like simple multiplication. On the number line, there are two groups of 3, except the integer is actually negative. It's about the same though.

Tema [17]3 years ago
3 0

Answer:

B

Step-by-step explanation:

minus 3 twice

 -3 times 2

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A candy company claims that its jelly bean mix contains 15% blue jelly beans. Suppose that the candies are packaged at random in
I am Lyosha [343]

Answer:

Doubtful.

Step-by-step explanation:

Our values are,

P=0.15 \rightarrow 15\%Jelly Bean Mix.

The sample for us is n=200

And our proportion (x) is 40 .

We can calculate  with this dates the sample proportion and make he test statistic.

p=\frac{x}{n} = \frac{40}{200} = 0.20

H_0:P=0.15

H_1:P \neq 0.15

We use the formula for Test statistic, that is given by,

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

z= \frac{0.20-0.15}{\sqrt{\frac{0.15(1-0.15)}{200}}}

z= 1.98

We see that our P-value: 0.048 (From the Table)

We note that p-value is less than 0.05, so we should to rejecyt the null hypothesis and conclude that the calim is doubtful

4 0
3 years ago
What is 50% of $68? Show all of your work. Use the percent proportion model shown below to set up the equation before you calcul
Natali5045456 [20]

Answer:

$34

Step-by-step explanation:

50% is half of 100%

(Because 50% x 2 = 100%)

Thus, half the money ($68) to find 50%.

So, 68÷2 = 34

Final answer is $34

Or

50/100 x $68 =$34

Hope this helps!

6 0
2 years ago
50 is 15% of what number?
Mashcka [7]
Converting percentage to a decimal : 
50%= 50 / 100 = 0.5 

What is 50% of 15
=50% * 15
=0.5 * 15
=7.5
6 0
3 years ago
ect the best answer for the question. 3. Rewrite the equation x + y + 3 = –2x + 4y + 18 into standard form (ax + by = c). A. 3x
trapecia [35]

Answer:

B

Step-by-step explanation:

To rewrite the equation x + y + 3 = -2x + 4y + 18, first combine like terms.

x + y + 3 = -2x + 4y + 18

3x - 3y + 3 = 18

3x - 3y = 15

This is the standard form.

It can also be simplified by dividing each term by 3 to x - y = 5.

5 0
3 years ago
39/4 as a mixed number
disa [49]
39 ÷ 4 is 9, with a remainder of 3. Then, you put 3 as the numerator, so your answer is 9 3/4. Hope this helps!
8 0
3 years ago
Read 2 more answers
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