-12(5/6a-7/8)+1/14(3 1/2a-1 2/5)

Answers

Answer 1
-12(5/6 a -7/8) + 1/14(3 1/2 a- 1 2/5)

First change mixed fractions to be full fractions

-12(5/6 a -7/8) + 1/14 (7/2 a - 7/5)

Now multiply out

-12(5)/6 a -12(-7)/8) + 7/14(2) a -7/14(5)
-60/6 a + 84/8 + 7/28 a -7/70
-10a + 10.5 + 1/4a - 1/10
-10a + 0.25a +10.5 -0.1
-9.75a + 10.4

*if this =0 and you need to solve for a then
9.75a=10.4
a= 10.4/9.75
a=16/15

Related Questions

The area of a triangle varies jointly with the height of the triangle and the length of its base. The area of one triangle is 200 square centimeters when its height
is 25 centimeters and its base length is 16 centimeters. What is the area of a triangle having a height of 20 centimeters and a base length of 15 centimeters?
0600 square centimeters
O 300 square centimeters
O 150 square centimeters
160 square centimeters

Answers

Answer:

150 square centimeters

Step-by-step explanation:

Area of a triangle:

The area of a triangle is the multiplication of 0.5, the base length and the height length.

What is the area of a triangle having a height of 20 centimeters and a base length of 15 centimeters?

[tex]A = 0.5*20*15 = 10*15 = 150[/tex]

The area of the triangle is 150 square centimeters.

please help im literally crying i cant fail this​

Answers

Answer:

V = 189

Step-by-step explanation:

V= lwh/3 = 9·9·7/3 = 189

the faulty odemeter of a used car registers 4.6 miles for every 5 miles driven. when travelling from acton to bywater, the faulty odemeter registers 92 miles. how far apart are acton and bywater

Answers

Answer:

i have no idea how to do this but good luck on your mathematics olympics !!

Step-by-step explanation:

Need help with this one thanks!

Answers

I think its B, but im not entirely sure.

E = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23}
A = {odd numbers}
B = {multiples of 3}
Complete the Venn diagram for this information.
6
A
B
e
15,2​

Answers

Answer:

A=11,13,17,19 B=12,18 None=10,14,16,19 Both=15

Step-by-step explanation:

11,13,15,17,19 are all odd so they go in A

12,15,18 Are all multiples of 3 so they go in B

10,14,16,19 Are not classified so they go outside of the diagram but inside E

15 is odd and a multiple of 3 so put it in the center and not with A and B

A large factory that builds machines has three shifts, one that starts at 4:00 A.M., one that starts at noon, and one that starts at 8:00 P.M. The manager of the factory wanted to know whether there is an association between an employee’s work experience (less than five years with the company, between five and twenty years with the company, over twenty years with the company) and the time of the employee’s shift. The manager selected a random sample of 125 employees and classified employees by their shift time and work experience. What is an appropriate pair of hypotheses for the manager to use?

Answers

Answer:

if the worker has more experience, then they will have longer shifts because they will be better at their job and be able to complete more tasks.

Step-by-step explanation:

use and "if then because" structure in a hypothesis, and use common logic based on the info provided :)

Answer:

[tex]H_{0}[/tex] : Work experience is independent of the time of an employee's shift

[tex]H_{A}[/tex] : Work experience is dependent on the time of an employee's shift

Step-by-step explanation:

Since we have one population but multiple variables, so we are using a chi-square test of independence. Thus, our null should be that there is no association, and the alternative that there IS an association.

Which situation can be modeled by the equation 705 – m= 430?
help !!!!

Answers

real world example could be:
Consider x is time in minutes
Consider y is the amount of fish food required in grams

The equation could then represent how much food (in grams) that a fish needs to be fed x minutes after it was previously fed.

Answer: Luigi has 705 wine kegs at his winery, and he delivers (m) amount of them to his brother at the marketplace. How many did he deliver in order to have 430 left?

I hope this helped!

Need help ASAP
I dont know what to do please help

Answers

Answer:

the first option

Step-by-step explanation:

equilateral triangles are also equiangular which means each of the three angles is 60°

but you can have an acute triangle with angle measures that are all acute (for example, 59°, 85°, and 36°) that is not equilateral

the square root of 50 plus 5 square root of 8
[tex] \sqrt{50} + 5 \sqrt{8} [/tex]

Answers

The simplify expression is 15 squared 2 or 21.2132


Evaluate the function for the given value.
f(x) = 6for x = 4
f(4)=

Answers

Don’t open that link they take all your information

what is the scale factor of the small triangle to the large triangle?

Answers

Answer:

I'm pretty sure it's 4.3?

Step-by-step explanation:

Because you divide the larger triangles side first because you are figuring out the scale factor of the small triangle to the larger triangle, not the other way around.

Sorry if i'm wrong

Answer:

first, find the area of the small triangle: 3 times 3 equals 9 divided by 2 equals 4.5.

second, find the area of the big triangle: 13 times 13 equals 169 divided by 2 equals 84.5.

Find difference: 84.5 minus 4.5 equals 80

Which of the following terms describes the 2 in the expression 5x - 3y + 2z + 1?

Answers

Answer:

coefficient

Step-by-step explanation:

it has three terms

9. Find the value of
the expression.
16 + 4 + (42 - 3) =

Answers

Answer:

59

Step-by-step explanation:

16 + 4 + (42 - 3) = 20 + 39 =59

Answer:

59

Step-by-step explanation:

16 + 4 + (42-3) = 59. Do parentheses first. (42-3) = 39. Which changes the equation to 16 + 4 + (39). 39 + 4 = 43. Then the equation changes to 16 + 43. These added together equal 59. Hope this helps!

PEMDAS= Parentheses, exponents, multiplication, division, addition, and then subtraction.

This is the order in which to solve these types of equations, which is why I did the parentheses first.

You inherit $10,000 and decide to invest the money in mutual funds for your 5 year old daughter's
future college expenses. After 6 years pass you decide to check on the value of your investment. You
find the balance after 6 years to be 18,000.
a) What is the growth rate in these 6 years for your investment. Round to the nearest thousandth.
b) Write an explicit equation for your investment.
c) Assuming your investment continues to grow at this rate, what is the value in 12 years?

Answers

Answer:

Thats confusing lol

Step-by-step explanation:

sprry

someone help with math:

For which equation is b = 5 not the solution?

options:

1. 8 - b = 13
2. b + 6 = 11
3. b + 4 = 9
4. 12 - b = 7

Answers

Answer:

option 2 and 3

b+6=11

b+4=9

Answer:

1. 8 - b = 13

Step-by-step explanation:

It says for which equation is b = 5 not the solution.

So, we need to plug in 5 into every b, and find out which one is incorrect.

1. 8 - 5 = 13 (incorrect)

2. 5 + 6 (correct)

3. 5 + 4 = 9 (correct)

4. 12 - 5 = 7 (correct)

Therefore, option 1 is the answer to your question.

Can someone help please please

Answers

Answer: A: (6, 5)

Step-by-step explanation:

When graphing a system of equations, you can find the solution by finding where the graphs intersect. In this case, the graphs intersect at (6, 5).

To verify that this is indeed a solution to the system of equations, we can substitute (6, 5) into both of the given equations:

[tex]y = \frac{1}{2}x + 2[/tex]

[tex]5 = \frac{1}{2} * 6 + 2[/tex]

[tex]5 = 3 + 2[/tex]

[tex]5 = 5[/tex]

[tex]y = x - 1[/tex]

[tex]5 = 6 - 1[/tex]

[tex]5 = 5[/tex]

Since both equations hold true when plugging in the given coordinate (6, 5), we know that this is a solution to the system of equations.

Enter the number that makes the equation true

0.02 + 5/100= ______ / 100 + 5/100

Answers

Answer:

2

Step-by-step explanation:

0.02 = 2/100 so the answer is 2

Triangle PQR is shown. The triangle has a base of 4 in and a height a 2.5 in.



Which measurement is closest to the area of triangle PQR in square inches?

5 in2.

8 3/4in.2

6 1/2in.2

11in.2

Answers

Answer:

A

Step-by-step explanation:

Area = 1/2 * b * h

b = 4 in

h = 2.5 inches

Area = 1/2 * 4 * 2.5

Area = 2 * 2.5

Area = 5 in^2

x/4−1=3

What is the value of x?

Answers

Answer:

x = 16

Step-by-step explanation:

x/4 - 1 = 3

x/4 = 3+1

x/4 = 4

x = 4*4

x = 16

Answer:

x=16

Step-by-step explanation:

always multiply denominator by whatever it is to the number behind the equl sign after subtracting that one it would be whatever that number is *4

Suppose a family has three children. Find the probability they have at
most one boy. (Enter as a decimal)?

Answers

Answer:

33.333333percent or .333333

Step-by-step explanation:

Please help ASAP the question is in the picture and please explain why and how u got the answer

Answers

Answer:

12

Step-by-step explanation:

Since the entire line is 60 and MN is five times as long. Then I would say that you could just divide 60 by 1/5 or 0.2

since the length of the line is 60 you gots to fos and divide it my homie.

60/5=12 so thats means the length is 12

you got that my guy

(sorry if ur a girl)

Please help ASAP. Thanks so much

Answers

Answer:

its A

Step-by-step explanation:

a is the answer bestie



A

Hey all!

Please only answer if you know the answer, the comment section is right below. Please don't waste my points!

Also, please show all of your work, you are trying to help me better understand the concept, not just give me the answer.

The image is down below. Show work! Thanks!

Answers

Answer:

65°

Step-by-step explanation:

Use the law of cosines:

cos C = (25² + 27² - 28²)/(2*25*27)cos C = 0.4222m∠C = arccos 0.4222m∠C = 65°

2.
Sal paid $3 to enter the fair and bought 10 tickets for rides. Write an algebraic
expression to tell how much money she spent. Let r= the cost of

Answers

I’m not to sure but 10 divided by 3= r

Arthur has a savings account. If he withdrawals $6, he
will have more than $26 remaining in the account. Which
inequality can be used to determine x, the amount of
money he had in his account before making the
withdrawal?
A.
X+6 26
B.
x + 6 = 26
C.
X-6226
D.
X-6 > 26

Answers

It’s D because if he withdrawals u would minus

Answer:

32

Step-by-step explanation:

6+26=32

Complete the proof.
Given:
R↔S tangent to circle A and circle B at points R and S.
Prove:
AR ∥ BS

Answers

The proof is shown below:

What is tangent?

The tangent is defined as a line touching circles or an ellipse at only one point.

As, tangent line is perpendicular to radius of the circle.

So,

AR ⊥ RS

BS ⊥ RS

Thus, AR and BS ⊥ to same line RS.

Now, either AR or BS are in same line or parallel.

since, they are the radius of different circles.

Hence, AR ║BS.

Learn more about tangent here:

https://brainly.com/question/26094603

#SPJ1

The Guy above me is correct

Plzzz help me I am bad at math!! Plzzz i am timed!

Answers

Answer:

[tex]70ft^{2}[/tex]

Step-by-step explanation:

1) Split into two shapes a triangle and a rectangle

2) Area of Triangle = (Base time Height)/2

3) 6*10=60/2 30

4) 4*10=40

5) 30+40=70

Answer:

lol 400 ft

Step-by-step explanation:

ik i already said but so other people can see

I need help with this problem please

Answers

Answer:

-9

Step-by-step explanation:

Remove parentheses.

9(−1)2−7

Subtract 77 from 22.

9(−1)−5

Rewrite the expression using the negative exponent rule b−n= 1/bn

91(−1)5

Raise −1 to the power of 5.

9(1/-1)

Divide 1 by −1.

9⋅−1

Multiply 9 by −1.

−9

Classify the solid figure.
O A. rectangular prism
O B. rectangular pyramid
O C. cylinder
O D. quadrilateral
HELP MEEE

Answers

That looks like a rectangular prism
It’s A.
..................

you are correctyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

Answers

Answer:

yayyy

Step-by-step explanation:

Answer:

Aww Thanks :)

Step-by-step explanation:

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