All categories

3 years ago

What is the area of the shape

Mathematics

1 answer:

Vera_Pavlovna [14]3 years ago

8 0

To find the area of a rhombus, the formula is d1(d2)/2
d1 is 4+4 or 8
d2 is 7+10 or 17
17(8)=136
136/2=68

You might be interested in

I need help bc my teacher wants me to email the answer and I don’t know what it is.

Free_Kalibri [48]

From what you are describing you should just simply plug in the x and y coordinates.

-2(-2)+4(1)=8

-2(0)+4(2)=8

6 0

3 years ago

Two different red-light-running signal systems were installed at various intersection locations with the goal of reducing angle-

nekit [7.7K]

Complete Question

Two different red-light-running signal systems were installed at various intersection locations with the goal of reducing angle-type crashes. Red-Light-Running System A resulted in 60% angle crashes over a sample of 720 total crashes. Red-Light-Running System B resulted in 52% angle crashes over a sample of 680 total crashes. Was there a difference between the proportions of angle crashes between the two red-light-running systems installed? Use an alpha of 0.10.

Answer:

Yes there is a difference between the proportions of angle crashes between the two red-light-running systems installed

Step-by-step explanation:

From the question we are told that

The first sample proportion is $\r p_ 1 = 0.60$

The second sample proportion is $p_2 = 0.52$

The first sample size is $n_1 = 720$

The second sample size is $n_2 = 680$

The level of significance is $\alpha = 0.10$

The null hypothesis is $H_o : \r p_1 - \r p_2 = 0$

The alternative hypothesis is $H_a : \r p_1 - \r p_2 \ne 0$

Generally the pooled proportion is mathematically represented as

$p_p = \frac{(\r p_1 * n_1 ) + (\r p_2 * n_2)}{n_1 + n_2 }$

=> $p_p = \frac{(0.6 * 720) + ( 0.52 * 680)}{720 +680 }$

=> $p_p = 0.56$

Generally the test statistics is evaluated as

$t = \frac{ ( \r p_1 - \r p_2 ) - 0 }{ \sqrt{ (p_p (1- p_p) * [ \frac{1}{n_1 } + \frac{1}{n_2 } ])} }$

$t = \frac{ (0.60 - 0.52 ) - 0 }{ \sqrt{ (0.56 (1- 0.56) * [ \frac{1}{720} + \frac{1}{680 } ])} }$

$t = 3.0$

The p-value obtained from the z-table is

$p-value = P(Z> t ) = 0.0013499$

From the question we see that $p-value < \alpha$ so the null hypothesis is rejected

Hence we can conclude that there is a difference between the proportions

3 0

3 years ago

jarptica [38.1K]

Answer:

350

Step-by-step explanation:

░░░░░▐▀█▀▌░░░░▀█▄░░░

░░░░░▐█▄█▌░░░░░░▀█▄░░

░░░░░░▀▄▀░░░▄▄▄▄▄▀▀░░

░░░░▄▄▄██▀▀▀▀░░░░░░░

░░░█▀▄▄▄█░▀▀░░

░░░▌░▄▄▄▐▌▀▀▀░░

▄░▐░░░▄▄░█░▀▀ ░░

▀█▌░░░▄░▀█▀░▀ ░░

░░░░░░░▄▄▐▌▄▄░░░

░░░░░░░▀███▀█░▄░░

░░░░░░▐▌▀▄▀▄▀▐▄░░

░░░░░░▐▀░░░░░░▐▌░░

░░░░░░█░░░░░░░░█

4 0

2 years ago

Mrs. Lavetan has 45 to complete her writing paper. She spend 10 and 1/8 min to planning her paper and 15 and 1/2 minutes weighti

Flura [38]

Answer: 20 minutes

Step-by-step explanation:

She has 45 mins to complete her writing paper.

She spends: $10\frac{1}{8}$ minutes to plan her paper.

She spends: $15\frac{1}{2}$ minutes writing rough drafts.

How much time left does she have?

$45-(10\frac{1}{8} +15\frac{1}{2})$

$45-(10+15(\frac{1}{8}+\frac{1}{2}))$

$45-(25\frac{(1)(2)+(8)(1)}{(8)(2)})$

$45-(25\frac{2+8}{16} )$

$45-(25\frac{10}{16})$ Simplify the fraction.

$45-(25\frac{5}{8})$

$45-25(\frac{5}{8})$

So she has approximately,

$20\frac{5}{8} =\frac{165}{8}= 20$ minutes.

8 0

3 years ago

BRAINLIESTTTTTT PLZZ

stiks02 [169]

Answer:

4n + n + 6 + 4n + n + 6

10n + 12

he ought to have added the Ns

cc: He is supposed to add the coefficients of N

4 0

3 years ago