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3 years ago

Write the word sentence as an equation. Then solve.

Mathematics

1 answer:

Tresset [83]3 years ago

4 0

Answer:

yes

Step-by-step explanation:

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What is 78 in scientific notation

4vir4ik [10]

Well first you take 78 and turn it to 7.8
then multiply by 10000
therefore 7.8*10000= ?

3 0

3 years ago

How much will you have contributed to a Whole Life insurance policy that has a face value of $60,000 over a 40-year

boyakko [2]

Answer: The answer is $44,496. I got it right on the test. Sorry that I was late...

Step-by-step explanation:

6 0

3 years ago

-3b + 7 = -15 + 2b <br>how to solve this question?<br>

dsp73

Answer:

Step-by-step explanation:

-3b - 2b + 7 = -15

-5b = -22

b = 22/5

5 0

3 years ago

Use the diagram of point O. What is the length of OY to the nearest 10th of an Inch? XZ = 10 and OX= 10

Lady bird [3.3K]

From the diagram above,

XZ = 10 in and OX = 10 in

we are to find length of OY

XZ is a chord and line OY divides the chord into equal length

Hence, ZY=YX= 5 in

Now we solve the traingle OXY

To find OY we solve using pythagoras theorem

$(Hyp)^2=(Opp)^2+(Adj)^2$

applying values from the triangle above

$\begin{gathered} OX^2=XY^2+OY^2 \\ 10^2=5^2+OY^2 \\ 100=25+OY^2 \\ OY^2\text{ = 100 -25} \\ OY^2\text{ = 75} \\ OY\text{ = }\sqrt[]{75} \\ OY\text{ = }\sqrt[]{25\text{ }\times\text{ 3}} \\ OY\text{ = 5}\sqrt[]{3\text{ }}in \end{gathered}$

Therefore,

Length of OY =

$5\sqrt[]{3}$

8 0

1 year ago

Please help. I’ll mark you as brainliest if correct!

sesenic [268]

Answer:

Quantity (lbs) of type 1 candy x = 8

Quantity (lbs) of type 2 candy y = 17,5

Step-by-step explanation:

Let´s call "x" quantity (in pounds) of candy type 1 in the mixture, and "y" quantity (in pounds ) of candy type 2, then according to the problem statement.

x + y = 25,5

2,20*x + 7,30*y = 5,70 * 25,5 ⇒ 2,20*x + 7,30*y = 145,35

Then we have a two equation system

x + y = 25,5 ⇒ y = 25,5 - x

2,20*x + 7,30*y = 145,35 ⇒ 2,20*x + 7,30* (25,5 - x ) = 145,35

2,20*x + 186,15 - 7,30*x = 145,35

5,1*x = 40,8

x = 40,8/5,1

x = 8 lbs

And y = 25,5 - 8

y = 17,5 lbs

5 0

3 years ago