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2 years ago

Annie built 4/10 of a fort on Saturday and the rest on Sunday. How much if the fort did Annie build on Sunday?

Mathematics

2 answers:

wolverine [178]2 years ago

5 0

6/10............................

ExtremeBDS [4]2 years ago

3 0

4/5 simplified. I hope I helped

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Please help me thank you. <br><br> show all work.

seraphim [82]

The length of OM is 4/3 the length of OJ, and the length of ON is 4/3 the length of OK. Thus, two pairs of sides from the triangles are proportional to each other.

Also, angle O from one of the triangles is equal to angle O of the other triangle because they are the same angle.

Thus, the two triangles are similar by SAS (side-angle-side) similarity theorem. This theorem is quite similar to the SAS congruence theorem.

To make a similarity statement, we just have to match corresponding parts when naming the triangle.

Similarity statement: ΔOJK~ΔOMN

3 0

2 years ago

The three angles of a triangle are in the ratio 5:4:1. Find all the angles of the triangle.

solniwko [45]

Answer:

Step-by-step explanation:

let the first angle be 5x

second be 4x

and third be 1x

as we know that by adding all the sides of triangle we get 180°

therefore ,

5x+4x+1x=180°

10x=180°

hence ,

x=18°

first angle - 18*5 = 90°

second angle - 18*4=72°

third angle - 18°

HOPE THIS HELPS YOU !!!

6 0

2 years ago

Read 2 more answers

3x-x-5=2(x+2)-9 what is the answer to x

Eddi Din [679]

Answer:

(-infinity, infinity) or all real numbers

Step-by-step explanation:

7 0

3 years ago

A swimming pool had 2.5 million liters of water 2million liters evaporated what percent of weather evaporated

Rufina [12.5K]

2million/2.5million=80%

8 0

2 years ago

In a recent contest, the mean score was 210 and the standard deviation was 25. a) Find the z-score of John who scored 190 b) Fin

denpristay [2]

Answer:

a) $Z = -0.8$

b) $Z = 2.4$

c) Mary's score was 241.25.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 210, \sigma = 25$