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kotegsom [21]
3 years ago
14

Sara uses a scale of 1 cm : 12 m to draw a floor plan of a

Mathematics
1 answer:
sweet [91]3 years ago
8 0
The correct answer is B. So for A, 8m is smaller than 12 m. For B, 20 m is Bigger. For C, Find how many meters is 1 centimeter, the answer is 1 cm : 12m, the meter is not bigger than 12, but the same, so C is wrong. For D, divide both sides by 3 to find 1 CM, the answer is 1 cm : 5 m, it is wrong.
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Write the quantity as percentage of the second (give answers to the nearest whole number).
GarryVolchara [31]

Answer:

1%

Step-by-step explanation:

We need our two numbers to have the same units. Since one number is in cents and the other is in dollars, we should change one of them. It could be either one.

Both numbers in cents:

50/4000

OR, both numbers in dollars:

.50/40.00

Either of these will work. Divide, you will get a decimal answer. Then multiply by 100 to change to a percent.

50÷4000 (OR .5/40)

= 0.0125

times by 100

0.0125 × 100

= 1.25% but the directions said to round to the nearest whole number, that's 1%

4 0
1 year ago
Read 2 more answers
A quiz has 8 multiple choice questions and 4 options for each. How many ways are there to answer the questions
andreev551 [17]

hiAnswer:

Step-by-step explanation:

7 0
3 years ago
Solve for a.<br> 4a+5=2+3.25a4a+5=2+3.25a
Rina8888 [55]

Answer:

a=-4

Step-by-step explanation:

4a-3.25a=2-5

0.75a=-3

a=-4

3 0
3 years ago
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Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?
BabaBlast [244]

Answer:

Step-by-step explanation:

x^2+20=2x move 2x to the left

x^2-2x+20=0

Quadratic formula =

x=1± i√19

8 0
3 years ago
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A consumer advocacy group wants to determine whether there is a difference between the proportions of the two leading automobile
podryga [215]

Answer:

The answer is "0.3206".

Step-by-step explanation:

H_0: p_1 = p_2\\\\H_a: p_1 \neq  p_2\\\\\hat{p_1} = \frac{X_1}{N_1} = \frac{53}{400} = 0.1325\\\\\hat{p_1}= \frac{X_2}{N_2} = \frac{78}{500}= 0.156\\\\\hat{p} = \frac{(X_1 + X_2)}{(N_1 + N_2)} = \frac{(53+78)}{(400+500)} = 0.1456

Testing statistic:

z = \frac{(\hat{p_1}- \hat{p_2})}{\sqrt{(\hat{p} \times (1-\hat{p}) \times (\frac{1}{N_1} + \frac{1}{N_2}))}}

=\frac{(0.1325-0.156)}{\sqrt{(0.1456\times (1-0.1456)\times (\frac{1}{400} + \frac{1}{500}))}}\\\\ = -0.99

Calculating the P-value Approach

\text{P-value}= 0.3206

7 0
2 years ago
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