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4 years ago

I just need help with problems 15 to 20 Please help

Mathematics

1 answer:

Andreas93 [3]4 years ago

3 0

73.5/5 because the middle number of four and three is 3.5

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Calculate m∠ABC and m∠CBD, what is the value of x?

VladimirAG [237]

Answer:

90°-x°=180°[by linear pair]

x=180°-90°

x=90°

angle cbd=45°

45°- (x+5)°=90°

x+5=90-45

x+5=45

x=45-5

x=40

angle abc

x+5

40+5

45°

7 0

2 years ago

Read 2 more answers

Draw the model to show 5.5/5

babunello [35]

This would be easy if you made more sense out of the question.

4 0

3 years ago

In preparation for a conference, Toby is setting up some stations where people can create

spin [16.1K]

Answer:

Step-by-step explanation:

I believe it should be 9 becasue the GCF of 9 and 18 is 9.

5 0

3 years ago

Create a linear regression equation that can be used to model the amount of money in the account (the balance), y, based on the

Karolina [17]

The regression equation is $\^y = 1.56\^x + 1.29$ , and it will take 31 weeks to have $50.00

(a) The linear regression equation

To do this, we make use of a graphing calculator;

From the graphing calculator, we have the following calculation summary:

The sum of X = 45
The sum of Y = 83
Mean X = 4.5
Mean Y = 8.3
Sum of squares (SSX) = 82.5
Sum of products (SP) = 128.5

The regression equation is then represented as:

$\^y = b\^x + a$

Where:

$b = \frac{SP}{SSX}$ and $a = M_Y - bM_X$

So, we have:

$b = \frac{128.5}{82.5}$

$b = 1.55758$

Approximate

$b = 1.56$

$a= 8.3 - (1.56 \times 4.5)$

$a= 1.29091$

Approximate

$a= 1.29$

This means that, the regression equation is $\^y = 1.56\^x + 1.29$

(b) Predict the time to have $50.00

This means that:

$\^y = 50$

So, we have:

$50 = 1.56\^x + 1.29$

Subtract 1.29 from both sides

$48.71 = 1.56\^x$

Divide both sides by 1.56

$31.22 = \^x$

Rewrite as:

$\^x = 31.22$

Approximate

$\^x = 31$

Hence, it will take 31 weeks to have $50.00

Read more about linear regression models at:

brainly.com/question/14585820

8 0

2 years ago

building across the street casts a shadow that is 24 feet long. Your friend is 6 feet tall and casts a shadow that is 4 feet lon

atroni [7]

Answer:

6/4=b/24

1.5=b/24

24(1.5)=b

36=b

Building is 36 ft tall

Step-by-step explanation:

3 0

3 years ago