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Simora [160]
3 years ago
5

Factor the expression. 40z – 20

Mathematics
2 answers:
dalvyx [7]3 years ago
8 0
(2 x 5 x 2 x 2 x z) - (2 x 5 x 2)
Phoenix [80]3 years ago
3 0

Answer:

20(2z – 1)

Step-by-step explanation:

Perfect! You were able to find that the greatest common factor is 20. Both 40z and -20 were then divided by 20 to get 2z - 1.

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Shannon and Kelly spent $135 on gift certificates for their friends during the holidays. If this amount is 5/7 their total spend
Katena32 [7]

Answer:

$189

Step-by-step explanation:

Let their total amount of spending money be x

given that $135 they spent is 5/7 of their total spending money,

mathematically:

135 = (5/7) x     (multiply both sides by 7)

135 (7) = 5x

945 = 5x

5x = 945  (divide both sides by 5)

x = 945 / 5

x = 189

4 0
3 years ago
Help Solve <br> 10<br> 12<br> −<br> 3<br> 8<br> . Show your solution as an equation.
ozzi
Say what now I hadn’t learned that yet omg I’m sry
8 0
2 years ago
Your class is taking a trip to a museum that is 190 miles away. The bus can travel at 55 miles per hour. At least how many hours
Fofino [41]

Answer:

3 hours and 45 minutes

Step-by-step explanation:

190/55=3.4545

8 0
3 years ago
If a hypothesis is not rejected at the 0.10 level of significance, it: a. may be rejected at the 0.05 level. b. must be rejected
mariarad [96]

Answer:

Option D - Will not be rejected at the 0.05 level.

Step-by-step explanation:

The significance level, which is denoted as "α", is a measure of the strength of the evidence that must be present in a sample before we can reject the null hypothesis and conclude that the effect is statistically significant. Now, this significance level must be determined before conducting an experiment.

Now, in the context of this question, the significance level is the probability of rejecting the null hypothesis when it is true. For example, a significance level of 0.05 means a 5% risk of concluding that a difference exists when there is no actual difference. Now, lower significance levels will indicate that we require stronger evidence before we can reject the null hypothesis.

Thus, if we don't reject at α = 0.1,we obviously will not reject at higher values.

Thus, looking at the options, we will not reject at 0.05 significance level.

4 0
3 years ago
In each diagram, line p is parallel to line f, and line t intersects lines p and f. Based on the diagram, what is the value of x
ololo11 [35]
X would be 84 degrees, since its corresponding angle would be worth 84.
Hope this helped!
4 0
3 years ago
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