please help with the mathematical questions​

Answer:

6

Step-by-step explanation:

270 divided by 45

=6

Answer:

x=2, z=4, y=-6

Step-by-step explanation:

Add

-9x-y+2z= -4

-6x+y+5z= 2

-9x-6x is -15x

-y+y is 0

2z+5z is 7z

-4+2 is -2

So the equation now looks like this: -15x+7z=-2

Subtract

-6x+y+5z= 2

-4x+y+5z= 6

So the equation will look like this:

-6x+y+5z= 2

-(-4x+y+5z= 6)

-6x+4x is -2x

y-y is 0

5z-5z is 0

2-6 is -4

So the equation now looks like this: -2x=-4

You can find x by dividing -2 on both sides:

x=2

So 2 is x

Now you can substitute x into 2

-15(2)+7z=-2

-30+7z=-2

7z=28

Divide 7 on both sides:

z=4

So now you can substitute z into 4 (For any of the three equation)

-4(2)+y+5(4)=6

-8+y+20=6

20 minus 8 is 12

y+12=6

Subtract 12 on both sides:

y=-6

So the answers are

x=2, z=4, y=-6

Hope this helps!

Answer:-4

Step-by-step explanation:we can easily see it on the graph

Answer:

95

Step-by-step explanation:

For average you just add all the numbers together and divide by how many numbers there are.

88+95+97+100=380

380÷4=95

The average of the given data is 95.

Average is defined as the ratio of the sum of the number of the data sets to the total number of the data. The average actually determines the middle value of the data.

Given that Jenny's test grades are 88, 95, 97, and 100. The average of the numbers will be calculated by adding all the numbers and dividing it by the total count of the numbers.

For average you just add all the numbers together and divide by how many numbers there are.

Average = ( 88+95+97+100 ) / 4

Average = 380 / 4

Average = 95

Therefore, the average of the given data is 95.

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Answer:

$395.55

Step-by-step explanation:

45%+10%=55%

100%-55%=45%

Since 45% is 45/100 in fractions, use that x 879 for the final price.

45/100x879=395.55

Hope this helps! Thanks.

Answer:

435.11

Step-by-step explanation:

First find the sale price of the computer. Then take the additional 10% off of the sale price.

Do you mean one as a whole or number?

This is what I have got:

7/8 because it is only 1/8 less than a whole

Answer:

2.33yd or 2 1/3yd

Step-by-step explanation:

7/3=2.33

Answer: X=4/2x+3

Step-by-step explanation:

I just know

-3/5  is greater than -4/5

Step-by-step explanation:

If they were just regular positive numbers then yes, it would be less than -4/5. However since they are negative for this I will switch them to decimals, . -.60 is more an -.80 because it is basically like a dept you owe.

for every completed length of audiobook, Zhen spends 6.5 hours working.

C.Zhen spends 6 1/2 hours working per audiobook

Answer:

The answer is 20

Answer:

19⋅2(3 third power)/5 ​=30 5/2 ​=30.4

Step-by-step explanation:

Answer:

2345677888yffycchujbvfsxbjydcbtscno

Answer:

2) 0.8/8+x=5/100

Step-by-step explanation:

Answer:

letter B is the correct answer!

Answer:

ㅛ해 주는 것이 좋다 나쁘다 라고 말하는 것은 아니다 싶으면 이 때 가장 중요한 역할을 하는 것 같다 ㅛ요톸 매매 ㅑ져뎌 재료 본연의 맛과 향을 느낄 수도 있다 보니

Answer:

the answer are is c,e,h because they have low prices

Answer:

[tex] {x}^{2} - 4x + 9 = 0 \\ x=\frac{-b\pm\sqrt{b^2-4ac}}{2a} \\ x=\frac{-( - 4)\pm\sqrt{( - 4)^2-4(1)(9)}}{2(1)} \\x=\frac{ 4\pm\sqrt{ 16-36}}{2} \\ x=\frac{ 4\pm\sqrt{ - 20}}{2} \\ x=\frac{ 4\pm2i\sqrt{ 5}}{2} \\ x = 2\pm \: i\sqrt{ 5} \\ D = {b^2-4ac} \\D = { 16-36} \\ = - 20 < 0 \rightarrow \: x \in \: \mathbb{C} \: \\ x \: is \: complex [/tex]

Hello there!

-8+r>-8

Move all the numbers to the right:

r>-8+8

r>0

Hope it helps!

~Just a joyful teen

[tex]GraceRosalia[/tex]

I think it is B

It makes the most sense to me to do that

Answer:

The answer is 1/4. Hope it helps.

Step-by-step explanation:

Answer:

c. 13

Step-by-step explanation:

c²=a²+b²

c²=5²+12²

c²=169

c=13

Answer:

The high temperature was recorded as 23 7°F The low temperature that same day was recorded as

-6.9°F

What was the difference between the high and low temperatures for that day?

Enter your answer as a decimal in the box

Answer is 30.6

Step-by-step explanation:

23.7

- 6.9

______

30.6

Have a blessed day

The difference between the high and low temperatures for that day is 30.6

The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.

For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.

12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.

As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.

This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.

Given:

The high temperature was recorded as 23 7°F = +23.7

the low temperature that same day was recorded as 6.9°F = -6.9 F

so,  difference between the high and low temperatures for that day

= 23.7- (-6.9)

= 30.6

Learn more about unitary method here:

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Answer:

[tex]a=\displaystyle \frac{k}{w+v}[/tex]

Step-by-step explanation:

Hi there!

[tex]\displaystyle \frac{k}{a} =w+v[/tex]

Multiply both sides by a:

[tex]a*\displaystyle \frac{k}{a} =a(w+v)\\\\k=a(w+v)[/tex]

Divide both sides by (w+v):

[tex]\displaystyle \frac{k}{(w+v)} =\displaystyle \frac{a(w+v)}{(w+v)}\\\\\displaystyle \frac{k}{w+v} =a[/tex]

I hope this helps!

Answer:

The answer is 100$ worth of lemonades

Step-by-step explanation:

Because 200$ are made with the tacos and lemonade so if the profit is 100 then you divide 100 by 2, so 50+50= 100.

Answer:

∠CDF = 23° ,  ∠CFD = 115° , ∠AFB = 115° , ∠BFD = 65° , ∠ABC = 42°

Step-by-step explanation:

m∠CDF = 180 - m∠CDE

m∠CDF = 180 - 157

m∠CDF = 23°

m∠CFD = 180 - ( m∠DCF + m∠CDF )

m∠CFD = 180 - ( 42 + 23 )

m∠CFD = 115°

m∠AFB = m∠CFD (Vertically opposite angles)

m∠AFB = 115°

m∠BFD = 180 - m∠CFD

m∠BFD = 180 - 115

m∠BFD = 65°

∠ABC

Solution 1:

m∠ABC = m∠DCF (Alternate angles)

m∠ABC = 42°

Solution 2:

In ΔAFB

m∠FAB = m∠CDF (Alternate angles)

m∠FAB = 23°

m∠ABC = 180 - ( m∠AFB + m∠FAB )

m∠ABC = 180 - ( 115 + 23 )

m∠ABC = 42°

Answer:

y

Step-by-step explanation:

4y=6 sorry thats all i know

Answer:

Step-by-step explanation:

a) Volume of prism: 6 units x 4 units x 7 units = 168 cubic units

b) Area of shaded base: 4 units x 7 units = 28 square units

Volume of prism: 6 x 4 x 7

Answer:

=–25960

Step by step explanation:

=677−525−(51)(512)

=152−(51)(512)

=152−26112

=−25960

Answer:

=–25960

Step by step explanation:

=677−525−51 512

=152−51 512

=152−26112

=25960

Answer:

3.0 E35

Step-by-step explanation:

Thanks.