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4 years ago

-1/9+-5/9= Simplest form 24 points

Mathematics

2 answers:

iren [92.7K]4 years ago

7 0

The answer is -2/3 or -0.667

marusya05 [52]4 years ago

5 0

Answer,

-1/9 + -5/9 = -2/3

Hope this helps :-)

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Janet surveyed a class or students she recorded the number of hours that each student volunteered this line plot shows the resul

maks197457 [2]

Answer:

Part A: 20 students

Part B: 4 hours

Step-by-step explanation:

Part A:

To find the number of students surveyed, we count the number of x there are in the graph.

students = 1 + 2 + 3 + 5 + 1 + 1 + 3 + 2 + 2 = 20

Part B:

To find the mean, we need to find the total number of hours volunteered first.

hours = 1x0 + 2x1 + 3x3 + 5x3 + 1x4 + 1x5 + 3x6 + 2x7 + 2x8 = 80

Now, we can find the mean. We divide the total number of hours volunteered by the number of students.

Mean = 80 ÷ 20 = 4

7 0

4 years ago

Determine the value of x for which rls if A)10 B)0.75 C)1.25 D)20

lesantik [10]

Answer:

x = 1.25

Step-by-step explanation:

<1 and <2 are corresponding angles and if the lines are parallel, corresponding angles are equal

<1 = <2

20-8x = 30-16x

Add 16x to each side

20-8x+16x = 30-16x+16x

20 +8x = 30

Subtract 20 from each side

20+8x-20 = 30-20

8x= 10

Divide by 8

8x/8 = 10/8

x = 5/4

x = 1.25

7 0

3 years ago

Read 2 more answers

A hydraulic motor develops 200 lb. ins. of torque at 800 RPM what's its horsepower

Natali5045456 [20]

Answer:

hgdfhsweriutsdgfdbjdg

Step-by-step explanation:

8 0

4 years ago

Alex scored 98,72, and 87 on his first three math test. What must he score on the next test to have an average of at least 86 (P

ss7ja [257]

Answer:

$\huge\boxed{\text{At least an } 87\%}$

Step-by-step explanation:

In order to find what score Alex must earn to have an average of 86 on all his tests, we need to first note what the formula to find the average of a data set is.

$\displaystyle \frac{x_1+x_2+...x_n}{n}$

What the formula means is that we have to add up all the values then divide by the total number of values.

Let's represent our unknown number as $x$ .

$\displaystyle \frac{98+72+87+x}{4} \geq 86$ (since we want AT LEAST an 86).

Let's solve this inequality for x.

$\frac{98+72+87+x}{4} \cdot 4 \geq 86 \cdot 4$
$98+72+87+x \geq 344$
$257 + x \geq 344$
$257 + x - 257 \geq 344 - 257$
$x \geq 87$

So, Alex must score at least an 87% on his next quiz to have an average of 86%.

Hope this helped!

8 0

3 years ago

Pls help me it's due today

MrRissso [65]

Answer:

16m² + 4m - 6

Step-by-step explanation:

Hello There!

For this one all we need to do is combine like terms

7m²-(-9m²)=16m²

2m-(-2m)=4m

-3-3=-6

so the answer would be

16m² + 4m - 6

4 0

3 years ago