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Scrat [10]
3 years ago
15

Miles incorrectly gave the product of 7 * 2.6 as 14 * 42 to use a place value chart or an area model to help miles understand hi

s mistake what is the answer
Mathematics
1 answer:
mrs_skeptik [129]3 years ago
7 0
It looks like he used the distributive property. He multiplied 7*2. Then. 7*6. Then he multiplied them together. That is not how you multiply numbers

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17) Evaluate D(4)<br> Please help
WINSTONCH [101]

Answer:

D(4) = 6

Step-by-step explanation:

Using the blue graph, find the y value when x =4

the y value is 6 when x=4

D(4) = 6

3 0
3 years ago
Hi yes I have more questions theyre in the pics as well as here
navik [9.2K]

Answer:

1.-6

Step-by-step explanation:

I don't know how to do the second one but

BD = DC

x+8 = 3x+2

2x=-4

x=-2

-6+12

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5 0
3 years ago
A retired woman has $280,000 to invest. She has chosen one relatively safe investment fund that has an annual yield of 9% and an
ASHA 777 [7]

Answer:

9% fund: $ 210,000

13% fund: $70,000

Step-by-step explanation:

As she wants to have a $28,000 annual return for her $280,000 investment, she is expecting a return rate of 10%:

r=\dfrac{R}{C}=\dfrac{28,000}{280,000}=0.10

If we call x the proportion of the capital in the 9% fund, then (1-x) is the proportion of the capital in the 13% fund,and the return of the combination has to be the expected return of 10%:

0.09x+0.13(1-x)=0.10\\\\0.09x+0.13-0.13x=0.10\\\\-0.04x=0.10-0.13=-0.03\\\\x=\dfrac{0.03}{0.04}=0.75

Then, we know that 75% of the capital should be invested in the 9% fund and 25% in the 13% fund.

This correspond to a capital of:

9% fund: 0.75*$280,000 = $ 210,000

13% fund: 0.25*$280,000 = $70,000

6 0
3 years ago
Solve for x,,,3x-1/4=-5/11
Neko [114]
\dfrac{3x-1}{4}=-\dfrac{5}{11}\ \ \ \ |cross\ multiply\\\\11(3x-1)=4\cdot(-5)\\\\33x-11=-20\ \ \ \ |add\ 11\ to\ both\ sides\\\\33x=-9\ \ \ \ |divide\ both\ sides\ by\ 33\\\\x=-\dfrac{9}{33}\\\\\boxed{x=-\dfrac{3}{11}}
4 0
3 years ago
The average of a distribution is equal to the summation of x divided by the number of observations is called
bekas [8.4K]

Answer :

<h3>The average of a distribution is equal to the summation of x divided by the number of observations is called <u>Mean</u></h3>

Step-by-step explanation:

<h3>The average of a distribution is equal to the summation of x divided by the number of observations is called <u>Mean</u></h3><h3>For :</h3>
  • We know that The average (Mean)=\frac{sum of the observations}{Number of observations}
  • Mean=\frac{\sum x}{N} where N is the number of observations
<h3>Therefore the average of a distribution is known as Mean.</h3>
4 0
3 years ago
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