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irina [24]
3 years ago
14

Please help solve Math again

Mathematics
2 answers:
pishuonlain [190]3 years ago
7 0

Answer: The Answer i believe is B i would think.


Step-by-step explanation:


PolarNik [594]3 years ago
3 0

Answer:

The answer is A and b=18.

Step-by-step explanation:

27=b+9 and then subtract 9 from each side to get b=18

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3. Are these ratios equivalent? 35:28 and 10:8 *
attashe74 [19]

Reduce each ratio to its minimum expression to find if they are equal.

35:28

\begin{gathered} \frac{35}{28}=\frac{7\cdot5}{7\cdot4} \\ =\frac{5}{4} \end{gathered}

10:8

\begin{gathered} \frac{10}{8}=\frac{2\cdot5}{2\cdot4} \\ =\frac{5}{4} \end{gathered}

Since both ratios reduce to 5:4, they are equivalent.

Another way to check a:b is equivalent to c:d, is that a*d = b*c

In this case, this will be true if 35 times 8 is equal to 10 times 28:

\begin{gathered} 35\cdot8=280 \\ 10\cdot28=280 \end{gathered}

Since both products are equal, then the ratios are equivalent.

4 0
1 year ago
Can someone please help me with this​
IrinaVladis [17]

Answer: measure angle 1 is 90°.Measure angle 2 is 35°

Step-by-step explanation:

Measure angle 1 is a right triangle, and that is 90° triangles equal 180 degrees... this means that since measure angle 3 is 55 degrees, and a rhombus is made of 4 equal triangles, then 180°-90°= 90°

90°- 55= 35°

therefore your answers are m<1 90° m<2 35°

8 0
3 years ago
To solve x2−8x=10 by completing the square, what should be added to both sides?
Murrr4er [49]

Answer:

16 will be added.

Step-by-step explanation:

Given equation is,

x² - 8x = 10

To convert this equation into a square form we will follow the following steps,

Step (1). x² - 2(4x) = 10

Step (2). x² -2(x)(4) + 16 = 10 + 16

Step (3). x² - 2(4)(x) + 4² = 26

Step (4). (x - 4)² = 26

In step (2) we have added 16 to both the sides of the equation to make is a perfect square.

4 0
3 years ago
I need help ASAP! This is geometry class
o-na [289]
Simple area working out:

Area of a triangle: L x W
———
2

Area of a square: L x W


17 (L) x 17 (H) = 289cm^2

289
——- = 144.5cm^2
2

There are 4 triangles so:

144.5 x the amount of triangles (4) = 578

Add everything together:

578 + 289 = 867

Answer: 867
6 0
2 years ago
Data are drawn from a bell-shaped distribution with a mean of 25 and a standard deviation of 4. There are 1.000 observations in
ludmilkaskok [199]

Answer:

a) 97.7%

b) Approximately 977 of these observations are less than 33.

Step-by-step explanation:

Problems of normally distributed samples are 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 = 25, \sigma = 4

a. Approximately what percentage of the observations are less than 33? (Round your answer to 1 decimal place.)

This is the pvalue of Z when X = 33. So

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

Z = \frac{33 - 25}{4}

Z = 2

Z = 2 has a pvalue of 0.977

So 97.7% of the observations are less than 33.

b. Approximately how many observations are less than 33?

97.7% of 1000. So

0.977*100 = 977.

Approximately 977 of these observations are less than 33.

3 0
3 years ago
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