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alexgriva [62]
4 years ago
15

Let P be a point between points S and T . If ST = 21, SP = 3b – 11, and PT = b + 4, solve for b.

Mathematics
1 answer:
Ulleksa [173]4 years ago
8 0
I thick the answer is c
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What is the exact area of a circle with a radius of 6 feet? 24π square feet 36π square feet 121π square feet 144π square feet
8090 [49]

Answer:

36π

Step-by-step explanation:

The formula for the area of a circle is π times radius squared.

The radius in this case is 6, so squaring it gets us 36.

Multiplying this by π gets 36π.

5 0
4 years ago
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"A country has 50 million people, 30 million of whom are adults. Of the adults, 5 million are not interested in working, another
Pani-rosa [81]

Answer:

There are 20 million people in the labour force.

Step-by-step explanation:

There are 50 million people in the country.

30 million people are adults.

Out of the 30 million, 5 million are not interested in working. Assuming every adult does what he/she wants, then these 5 million are not working. The list then reduces to

30 - 5 = 25 million.

Another 5 million are interested in working but have given up looking for work. The list reduces to

25 - 5 = 20 million.

5 million people are working part time but would like to work full time. They are working, it doesn't matter if it is part time or full time, they are in the labour force.

10 million people are working full time. They are also in the labour force.

THERE ARE 20 MILLION PEOOLE IN THE LABOUR FORCE

3 0
4 years ago
Please helpoppplllll mei need to complete this I will give brainly
Sonbull [250]

Answer:

(5,-6) I think

Step-by-step explanation:

5 0
3 years ago
What is the value of b that makes the lines, given by 3x-y=4 and 2y+4bx=1, perpendicular?
USPshnik [31]

b = 1/6

Explanation:

3x-y=4 ...1st equation

Rewriting in slope- intercept form:

y = 3x - 4

2y+4bx=1

Rewriting in slope- intercept form:

2y = -4bx + 1

y = -4bx/2 + 1/2

Equation of line: y = mx + c

where m = slope, c = intercept

For a line to be perpendicular to another, the slope of one will be the negative reciprocal of the slope of another.

Slope of the 1st equation = 3

m = 3

reciprocal of 3 = 1/3

negative reciprocal of 3 = -1/3

Slope of the 2nd equation = -4b/2

we equate both slope:

negative reciprocal of 3 = -4b/2

-1/3 = -4b/2

cross multiply:

-1(2) = 3(-4b)

-2 = -12b

Divide both sides by -12:

-2/-12 = -12b/-12

b = 1/6

Hence, the value of b that makes the lines perpendicular is 1/6

6 0
1 year ago
a supplier sells 2 1/4 pounds of mulch for every 1 1/3 pounds of gravel. The supplier sells 172 pounds of mulch and gravel combi
laila [671]

We first write the fractions in their decimal forms and find out the ratio.

2 1/4 is equivalent to 2.25, and 1 1/3  is equivalent to 1.33

Ratio will be 2.25 / 1.33 = 1.69  or 1.7 rounded off. Since it cannot be simplified further, then the ratio of mulch to gravel will be 1.7: 1

Quantity of mulch sold → 1.7/2.7 of 172 →0.629 ×172 = 108.2 pounds

Quantity of gravel sold will be  172 -108. 2 = 63 .8 pounds



6 0
3 years ago
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