how do I solve this math question?​

Answer:

2r^2-8

Step-by-step explanation:

(r+2)(2r-4)

2r^2-4r+4r-8

Combine like terms.

2r^2-8

9514 1404 393

Answer:

  -2

Step-by-step explanation:

The solution to the system is where the lines cross. The x-coordinate of that point is its horizontal distance from the y-axis.

The solution is (x, y) = (-2, 2). The x-coordinate is -2.

Answer:

x = 27.86 thats the answer

Answer:

0.2786

Step-by-step explanation:

Solution Steps:

The following question is of the type "How much X percent of W", where W is the whole amount and X is the percentage figure or rate".

Let's say that you need to find 14 percent of 1.99. What are the steps?

Step 1: First determine the value of the whole amount. We assume that the whole amount is 1.99.

Step 2: determine the percentage, which is 14.

Step 3: Convert the percentage 14% to its decimal form by dividing 14 into 100 to get the decimal number 0.14: 14100 = 0.14

Notice that dividing into 100 is the same as moving the decimal point two places to the left. 14.0 → 1.40 → 0.14

Step 4: Finally, find the portion by multiplying the decimal form, found in the previous step, by the whole amount: 0.14 x 1.99 = 0.2786 (answer).

The steps above are expressed by the formula: P = W × X% 100. This formula says that: "To find the portion or the part from the whole amount, multiply the whole by the percentage, then divide the result by 100". The symbol % means the percentage expressed in a fraction or multiple of one hundred.

Answer:

rounded to the nearest hundredth it would be 52.81

Answer:

52.81

Step-by-step explanation:

Rounded to nearest hundreth

Answer:

190 degrees or 1 degree

Step-by-step explanation:

Answer:

.12 cent

Step-by-step explanation:

Answer:

0.120

Step-by-step explanation:

3.879-3.759

0.120

Answer:

24.3

Step-by-step explanation:

To find the perimeter of any figure you just add the sides together

figure A''B''C''D'' is congruent to figure ABCD therefore they have the same side lengths

so to find the perimeter we add

6+6+6+6.3=24.3

so the perimeter is 24.3

hope this helps!

Answer:

Alvin is 47 and Elga is 35

I promise

Answer:I got the pic over here

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

if you graph this you go down 1 and to the right 3, so it would be a negative slope.

Answer:

I think they are.

Answer:no

Step-by-step explanation:

The 30 was subtracted by 10 to make 20. Only thing is that 37 - 10 doesn’t equal 24. Also 2 angles inside both triangles are not the same so your answer is no.

Answer:

131,000 (0.99)

Step-by-step explanation:

well i just added it up and it takes that much that is at the top

Use trigonometry.

sin x = opposite ÷ hypotenuse

sin x = 7/9

Take the arcsin on both sides.

arcsin(sin x) = arcsin(7/9)

x = 51.057558731

Rounding to the nearest whole number means to round to the ones place.

Answer: x = 51 degrees

Answer:

Step-by-step explanation:

Common ratio r = a₂/a₁ = 16/(-4) = -4

a₄ = a₃(-4) = 256

a₅ = a₄(-4) = -1024

a₆ = a₅(-4) = 4096

Answer/Step-by-step explanation:

Epression to solve with: 8n+6

Number of tickets : 6

n - number of tickets

So you equation would be :

8(6) + 6

First multiply:

8*6 = 48

48 + 6

Next add:

48 + 6 = 54

Answer:

1500 cm²

Step-by-step explanation:

→ State area of circle formula

π × r²

→ Substitute in values

22/7 × 70² = 1500

→ Include units

1500 cm²

Answer:

72

Step-by-step explanation:

collect like terms and crossmultiply

Answer:

what do we evaluate the picture is all blurry and won't show up

Answer: 88

The mode is the value that appears most frequently in a data set.

The mode of the given data set will be 88.

The mode is the value that appears most often in a set of data values.

We have,

Data set            100, 98, 95, 92, 88, 85, 80, 75.

Frequency           1,     2,   2,   4,   7,    3,   5,    1

So,

As mentioned in the statement above,

Mode is the value that appears most often in a set of data values.

So,

We can see from the given table

i.e.

Frequency of 88 is maximum,

So,

The mode of the given data is 88.

Hence, we can say that the mode of the given data set will be 88.

To know more about mode click here

https://brainly.com/question/300591

#SPJ2

Answer:

i believe it is a polynomial, but I need to see the options available to give you a better answer.

Step-by-step explanation:

trust lol

Answer:

By multiple by 2

Step-by-step explanation:

1 multiplied by 2 = 2

3 multiplied by 2 = 6

In that case they equivalent due to the number 2.

Answer:

26.14

Step-by-step explanation: Just subtract.

Step-by-step explanation:

.05N + .10D = 1.65

.05 is the value of the nickel and .10 is the value of the dime.

N + D = 21 because you have some combination of them that total 21

solve for N: N = 21- D

substitute into the first equation

0.5 (21-D) + .10D = 1.65

1.05 - .05D + .10D = 1.65

.05D = .6

D = 12 you have 12 dimes

21-12 = 9 nickels

Answer:

55.94°

Step-by-step explanation:

Reference angle = x

Hyp = 25

Adjacent = 14

Apply CAH:

[tex] Cos(x) = \frac{Adj}{Hyp} [/tex]

[tex] Cos(x) = \frac{14}{25} [/tex]

[tex] x = Cos^{-1}(\frac{14}{25}) [/tex]

x = 55.9442023° ≈ 55.94° (to 2 d.p)

Answer: I believe it is c 4

Step-by-step explanation:

but im not sure

Answer:

D

Step-by-step explanation:

Answer:

10,000

Step-by-step explanation:

yes