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3 years ago

Pls help, what do I put in the blanks and what's the equation thank you

Mathematics

1 answer:

Marat540 [252]3 years ago

3 0

Answer:

-1 = -4

0 = -3

-5 = -8

-2 = -5

Step-by-step explanation:

What you are doing is adding -3 to each number. An equation will look like:

x+-3=y. You will then take the x and plug it into the x and you will find the y.

-1+-3=-4.

You will do this for each one.

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Write <img src="https://tex.z-dn.net/?f=cot%5E%7B2%7D%20x%20%281%2Btan%5E%7B2%7D%20x%29" id="TexFormula1" title="cot^{2} x (1+ta

ASHA 777 [7]

Step-by-step explanation:

From Trig

1 + tan²x = Sec²x

Also

Sec²x = 1/cos²x

Now

Cot²x = 1/tan²x = cos²x/sin²x

Putting all together

Cot²x(1+tan²x)

= Cot²x(sec²x)

= cos²x/sin²x(1/cos²x)

cos²x on the numerator and that one the denominator cancels out

we have

= 1/sin²x

From Trig

1/sin²x = cosec²x

So Our Answer = cosec²x.

7 0

3 years ago

Hailey and Kacie are selling candles to raise money. • Hailey is selling candles for $4 each and has already raised $160. • Kaci

marysya [2.9K]

Answer:

The number of candles each girl needs to sell so that the total amount raised is the same for both is

Hailey 70 candles

Kacie 40 candles

Step-by-step explanation:

Let

x------> the number of candles sold

y----> total amount raised

we know that

Hailey's equation

$y=4x+160$ -----> equation A

Please note that Hailey has already raised $160, so he has sold 40 candles.

Kacie's equation

$y=7x+70$ -----> equation B

Please note that Kacie has already raised $70, so he has sold 10 candles.

equate equation A and equation B solve for x

$4x+160=7x+70$

$7x-4x=160-70$

$3x=90$

$x=30\ candles$

The number of candles each girl needs to sell so that the total amount raised is the same for both is

Hailey

40+30=70 candles

Kacie

10+30=40 candles

8 0

3 years ago

In a study, Phoenix Marketing International identified Bridgeport, Connecticut; San Jose, California; Washington, DC; and Lexing

kati45 [8]

Answer:

The estimate of the percentage of millionaires in each of these cities:

Bridgeport San Jose Washington Lexington Park

CT CA D.C. MD

Percentage of

Millionaires 9% 12% 9% 8.3%

Step-by-step explanation:

Data and Calculations: City

Bridgeport, San Jose, Washington, Lexington Park,

Millionaire CT CA D.C. MD

Yes 45 36 36 33

No 455 264 364 367

Sample 500 300 400 400

Percentage of

Millionaires 45/500 36/300 36/400 33/400

= 0.09 0.12 0.09 0.0825

= 9% 12% 9% 8.3%

3 0

3 years ago

Solve tor r. *a(5 – x) = bz - 8

Mars2501 [29]

Answer:

See explanation

Step-by-step explanation:

Assuming the given equation is

$a(5 - r) = bz - 8$

To solve for r, we first divide both sides by a.

$5 - r = \frac{ bz - 8}{a}$

We now subtract 5 from both sides:

$- r = \frac{ bz - 8}{a} - 5$

We now divide through by - 1 to get:

$r = 5 - \frac{ bz - 8}{a}$

$r = \frac{5a - bz + 8}{a} \: \: where \: a \ne0$

3 0

3 years ago

How can estimating the quotient help you check that your answer to a division problem is reasonable?

neonofarm [45]

Explanation:

If your actual answer is very far from your estimate, you probably made a mistake somewhere.

Additional comment

50 years ago, when a slide rule was the only available calculation tool, making an estimate of the result was a required part of doing the calculation. Not only were the first one or two significant digits needed, but also the power of 10 that multiplied them. Use of a slide rule required the order of magnitude be computed separately (by hand) from the significant digits of the result.

You may also find it useful to estimate the error in your estimate. That is, you may want to know the approximate answer to 2 (or more) significant digits in order to gain confidence that your calculation is correct.

7 0

3 years ago