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KonstantinChe [14]
3 years ago
8

Tell whether the equation is true or false. * 3 60 = 20 O True O False

Mathematics
1 answer:
Verizon [17]3 years ago
5 0
The answer to that would be false
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Eric drew a scale drawing of a country park. The scale he used was 1 inch = 2.5 yards. The picnic area is 80 yards wide in real
Alchen [17]
If 1 inch = 2.5 yards then
x inch = 80 yards
cross multiplying we have:
80 × 1 = x × 2.5
x = 80÷ 2.5 = 32 inches
therefore the picnic area is 32 inches in the drawing.
5 0
4 years ago
Write an equivalent ratio for 3/30
nalin [4]

Answer:

One example of an equivalent ratio to 3/30 is 1:10.

6 0
4 years ago
HELPPPPP MEEEEEEEE !!!!!!!​
Alecsey [184]

Answer:

aquí está

Step-by-step explanation:

  1. 7x+3-6x=6x-3-6x
  2. x+3=-3
  3. x+3-3=-3-3
  4. x=-6
7 0
3 years ago
A researcher wished to compare the effect of two stepping heights (low and high) on heart rate in a step-aerobics workout. A col
Alinara [238K]

Answer:

The answer is "between 0.10 and 0.05".

Step-by-step explanation:

For sample 1:

n_1 = 25\\\\\bar{x_1} = 90.00\\\\ s_1 = 9\\\\

For sample 2:

n_2 = 25\\\\ \bar{x_2} = 95.08\\\\ S_2 = 12\\\\

Calculating the null and alternative hypotheses:

H_O : \mu_1 = \mu_2 \\\\ H_Q : \mu_1  

Calculating the test statistic:

Z= \frac{90-95.08}{ \sqrt{\frac{9^2}{25}+\frac{12^2}{25}}} \\\\ =\frac{-5.08}{ \sqrt{\frac{81}{25}+\frac{144}{25}}}\\\\=\frac{-5.08}{ \sqrt{\frac{81+144}{25}}}\\\\=\frac{-5.08}{ \sqrt{\frac{225}{25}}}\\\\=\frac{-5.08}{ \frac{15}{5}}\\\\=\frac{-5.08}{3}\\\\= -1.693

Calculating the conservative degrees of freedom:

DF = min (n_1 -1, n_2 - 1) = min(25-1, 25-1) = 24

by using Excel the p-value for left tailed test and for test statistic will be -1.693 with DF = 24.

\to p-value = TDIST(1.693, 24, 1) = 0.0517\ \ \ \  i.e, \bold{0.05 < p-value < 0.10}

5 0
3 years ago
What is the slope of the line that passes through the points (-6, 8)(−6,8) and (-16, 33) ?(−16,33)? Write your answer in simples
Taya2010 [7]

Given:

A line passes through the points (-6, 8) and (-16, 33).

To find:

The slope of the line.

Solution:

If a line passes through two points, then the slope of the line is

m=\dfrac{y_2-y_1}{x_2-x_1}

The line passes through the points (-6, 8) and (-16, 33). Using the above formula, the slope of the line is

m=\dfrac{33-8}{-16-(-6)}

m=\dfrac{25}{-16+6}

m=\dfrac{25}{-10}

m=-2.5

Therefore, the slope of the line is -2.5.

3 0
4 years ago
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