All categories

3 years ago

Help please due soon

Mathematics

2 answers:

lisabon 2012 [21]3 years ago

8 0

Answer: 24

Step-by-step explanation: 15 times 3 is 45 so u would multiply 8 by 3 and 8 times 3 is 24

ANEK [815]3 years ago

5 0

Answer: c=24

Step-by-step explanation: 15×3=45. 8×3=24. Just multiply both the numerator and denominator by 3.

You might be interested in

Write a problem that the expression 3(-7) -10+25= -6 coud represent

Finger [1]

Solve the equation and it will add up to -6 so
3×-7=-21
-21-10=-31
-31+25=-6

5 0

3 years ago

Simplify <img src="https://tex.z-dn.net/?f=7%5E%7B-2log_%7B7%7D3%7D" id="TexFormula1" title="7^{-2log_{7}3}" alt="7^{-2log_{7}3}

jasenka [17]

This expression is equivalent to:

[ 7^(log to the base 7 of 3)]^(-2), or [3]^(-2)], or 1/9.

6 0

3 years ago

The test statistic of zequals1.18 is obtained when testing the claim that pgreater than0.2. a. Identify the hypothesis test as b

labwork [276]

Answer:

a) Right Tailed

b) p-value = 0.119

c) We fail to reject the Null Hypothesis( $H_{o}$ )

Step-by-step explanation:

We have the following data:

Test Statistic = z = 1.18

Claim: p > 0.2

Part a) Type of Test

Remember that when there is Greater than, Lesser than or any synonymous word in the claim, this means that the test is one-tailed.

Greater than word indicates a Right Tailed Test
Lesser than word indicates a Left Tailed Test

Since, the claim is that p is greater than 0.2, the hypothesis test will be Right Tailed.

Part b) P-value

We have to find the p-value for the given test statistic. Since, the test statistic is a z-value we will use z-table to find the p-value for this score. Since, this z-score is for claim that p is greater than 0.2, so we will find the p-value(probability) of score being above 1.18

The p-value of z being greater than 1.18 comes out to be 0.119. i.e.

p-value = 0.119

Part c) Decision

Calculated p-value is 0.119 and significance level = 0.05. The rule is:

If p value is equal to or lesser than the significance level, then we reject the null hypothesis
If p value is greater than the significance level, then we fail to reject the null hypothesis

Since, in this case our p-value is greater than the significance level, we fail to reject the null hypothesis ( $H_{o}$ ).

3 0

3 years ago

a sheep breeding farm counted a total of 40 sheep on their grounds after one year the number of sheep doubled then in the next y

SpyIntel [72]

Answer:
graph (b)

Explanation:
The farm started with 40 sheep and the number doubled each year.
So, the equation modeling this situation would be:
N(x) = 40*(2)^2
By getting the equation, we can notice that we already excluded the third and fourth choices as they have the wrong equations.

Now, we will need to select the right graph which is either graph a or graph b.
To do this, we will get the value of N(x) for different values of x as follows:
At x = 0: N(0) = 40*(2)^0 = 40
At x = 1: N(1) = 40*(2)^1 = 80
At x = 1: N(2) = 40*(2)^2 = 160

Now, taking a look at graph a, we will find that:
N(1) = 120
N(2) = 360
These numbers are not the same as the numbers we calculated, therefore, this graph is wrong

Taking a look at graph b, we will find that:
N(1) = 80
N(2) = 160
These numbers are exactly the same as the ones calculated, therefore, this graph is the correct one.

Hope this helps :)

7 0

4 years ago

Solve system of linear equation with substitution

Blizzard [7]

Answer:

x=1, y=2

Step-by-step explanation:

solve by substitution so substitute x= 6y-11 in the next equation

3 (6y-11) - 2y = -1

18y -33-2y = -1

16y = 33-1

y= 32/16 =2

x= 6y -11 = 6*2 -11 = 12 -11 = 1

7 0

3 years ago