Help me on this please

Answer:

the correct answer is 8. hope this helps

Answer:

3.2t -2.4

Step-by-step explanation:

-3.6 - 1.9t + 1.2 + 5.1t

(add like terms)

3.2t - 2.4

Answer:

it is odd

Step-by-step explanation:

Answer:

9a4−a2b−8b2

Step-by-step explanation:

=(9a2+8b)(a2+−b)

=(9a2)(a2)+(9a2)(−b)+(8b)(a2)+(8b)(−b)

=9a4−9a2b+8a2b−8b2

Answer:

v = 350 m/s

Step-by-step explanation:

Given that,

Frequency of sound waves of a mosquito beating, f = 700 Hz

Wavelength, [tex]\lambda=0.5\ m[/tex]

The speed of a wave is given by the formula as follows :

[tex]v=f\lambda\\\\v=700\ Hz\times 0.5\ m\\\\v=350\ m/s[/tex]

So, the sound waves of the beating mosquito wings traveling at speed of 350 m/s.

Answer:

-6

Step-by-step explanation:

because the last number in the slope intercept form equation is always the y intercept

Answer:

Step-by-step explanation:

[tex]y = -4x -6[/tex]

Let x equal 0

[tex]y= -4(0) -6\\\\y =0-6\\\\y = -6[/tex]

Answer:

Not a function because some x values have multiple y values

Step-by-step explanation:

The meaning of a function is that an x value can only have on y value. If we were to pass a vertical line through this graph, we would find that about 2 points would be hit every time. This tells us that the x values have multiple y values and it's not a function.

Answer:

The height and base of the rectangle are approximately 5.453 inches and 10.453 inches, respectively.

Step-by-step explanation:

From Geometry we remember that area of a rectangle ([tex]A[/tex]), measured in square inches, is equal to:

[tex]A = w \cdot h[/tex] (Eq. 1)

Where:

[tex]w[/tex] - Width, measured in inches.

[tex]h[/tex] - Height, measured in inches.

In addition, we get the following relationship from statement:

[tex]w = h+5\,in[/tex] (Eq. 2)

If we know that [tex]A = 57\,in^{2}[/tex], then the height of the rectangle is:

[tex]57\,in^{2} = (h+5\,in)\cdot h[/tex]

[tex]h^{2}+5\cdot h -57 = 0[/tex]

From Quadratic Formula we obtain the following roots:

[tex]h_{1} \approx 5.453\,in[/tex] and [tex]h_{2}\approx -10.453\,in[/tex]

Only the first root offers a reasonable solution, as length has always positive values. Thus, the height of the rectangle is approximately 5.453 inches.

Now we calculate the width of the rectangle from (Eq. 1):

[tex]w = \frac{A}{h}[/tex]

If we know that [tex]A = 57\,in^{2}[/tex] and [tex]h \approx 5.453 \,in[/tex], then the width of the rectangle is:

[tex]w = \frac{57\,in^{2}}{5.453\,in}[/tex]

[tex]w \approx 10.453\,in[/tex]

The height and base of the rectangle are approximately 5.453 inches and 10.453 inches, respectively.

Answer:

13.23

Step-by-step explanation:

Answer: When we use the order of operations to solve this expression we get the Answer 13.23 Hope this helps

Step-by-step explanation:

Answer:

190.47 (190 47/100)

Step-by-step explanation:

First, you need to find a common denominator, which is 100. So multiply 3/10 by 10 with both the numerator and denominator. So your new equation should be 382 30/100 - 191 87/100. Even though 382 is larger than 191, 3/100 is still less than 87/100. So what you do is cross out the first/whole number and then add the denominator.

Hope this helped! <3

Answer:

190.43

Step-by-step explanation:

Convert the denominator to 100

> 382 30/100 - 191 87/100

Subtract the whole numbers and the fractions separately

> (382 -191) + (30/100 - 87/100)

> 191 + (-57/100)

> 190 43/100

= 190.43

Answer:

y = 125*

Step-by-step explanation:

so the area of a triangle adds up to 180*

180 - 55 = 125

correct me if i am wrong also do u have any answer choices?

Answer:

3 with multiplicity 4 and –6 with multiplicity 2

Step-by-step explanation:

Set equal to zero and solve for

x

. The multiplicity of a root is the number of times the root appears.

x=3(Multiplicity of 4)

x=−6(Multiplicity of 2)

Answer:D

Step-by-step explanation: I think this is the answer on edge

Answer:

cost = 50

sold price = 20 × 4 = 80

he have profit

percent =

the profit percent is 62.5

HOPE ITS HELPFUL

AND MARK AS BRAINIEST

Step-by-step explanation:

Answer:

a^2x(1+3at)

Step-by-step explanation:

Answer:

11.66

Step-by-step explanation:

Answer:

I think it is the last answer, [tex]\sqrt{2}[/tex] and 1.23459876567

Answer:

Last one

Step-by-step explanation:

For something to be 'irrational', you shouldn't be able to put it in a fraction. You can know if something is irrational because when you look at it in decimal form and the numbers after the decimal point are random and do not follow a pattern (ie 276276276...).

Hence that is why pi is irrational as well because the numbers after the dec. point are: 3.1415626.... there is no visible pattern

Answer:

Nonlinear.

Step-by-step explanation:

Slope-Intercept Form: y = mx + b

m - slope

b - y-intercept

We notice that if the line is linear, x will NOT go over a degree of 1.

x² is a quadratic function, and its slope is not proportional like a linear line.

Answer:

C. 9

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

Answer:

x=17

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

129=2x-3

132=2x

x=66

129+3y=180

180-129=3y

51=3y

y=17

Answer:

0.8

Step-by-step explanation:

If you look at the wheel it has a total of 5 sections and 4 of the sections are beaver.

Therefore, 4/5 = 80% or 0.8

Answer:

it was 1/3

Step-by-step explanation:

i know because i got it right on khan academy adn sorry if im am late

Answer:

1

2 Remainder

Step-by-step explanation:

Step 1:

Start by setting it up with the divisor 7 on the left side and the dividend 9 on the right side like this:

   7 ⟌ 9    

Step 2:

The divisor (7) goes into the first digit of the dividend (9), 1 time(s). Therefore, put 1 on top:

       1    

   7 ⟌ 9    

Step 3:

Multiply the divisor by the result in the previous step (7 x 1 = 7) and write that answer below the dividend.

       1    

   7 ⟌ 9    

       7    

Step 4:

Subtract the result in the previous step from the first digit of the dividend (9 - 7 = 2) and write the answer below.

       1    

   7 ⟌ 9    

     - 7    

       2    

You are done.

The answer is the top number and the remainder is the bottom number.

Therefore, the answer to 9 divided by 7 calculated using Long Division is:

1

2 Remainder

Answer: 300 miles

Step-by-step explanation:

Let x= Number of miles driven by both cars.

As per given,

For Company A

Charges = $130 a day plus ​$0.30 per mile.

i.e. Total charge = 130+0.30x

For Company B

Charges =​$40 a day plus ​$0.60 per mile

i.e. Total charge =40+0.60x

When the rental cost for both company is same,

40+0.60x=130+0.30x

⇒ 0.60x-0.30x= 130-40

⇒ 0.30x= 90

⇒ x= 90÷0.30

⇒ x=  300

hence,  the number of miles in a day at which the rental costs for Company A and Company B are the same = 300

Answer:

$3.80

Step-by-step explanation:

Given that:

One cup of lemonade is sold at 45 cents.

Total money made = $17.10

Number of cups of lemonade sold can be found by dividing the total money made with the sale price of one cup of lemonade.

Number of cups of lemonade sold = [tex]\frac{\$18.10}{45\ cents} = \frac{\$18.10}{\$0.45} =38[/tex]

For each cup sold, 10 cents are donated.

Total money donated = 38 [tex]\times[/tex] 10 = 380 cents = $3.80

Therefore, the answer is:

Total money donated by Mary is $3.80

Answer: 20 Feet

Step-by-step explanation:

Answer:

45ft

Step-by-step explanation:

This is just a ratio.

12:18

30:?

30/12=2.5

so do, 18*2.5=45

so, the tree is 45 ft

Answer:

The answer is b

Step-by-step explanation:

Answer:

B; 22.75 square meters

Step-by-step explanation:

I got it correct. Trust me.

Answer:

The value of the number is either 1 or -10/3

Step-by-step explanation:

If the same number is added to triple the square of a number seven times, the result is 10. What is that number?

Let the number = x

Therefore, we have;

3·x² + 7·x = 10

Therefore, we have;

3·x² + 7·x - 10 = 0

Dividing by 3 gives;

x² + 7/3·x - 10/3 = 0

Factorizing gives;

(x - 1)·(x + 10/3) = 0

x = 1 or -10/3

The number is either 1 or -10/3.

Answer:

a + d = 90

c + b = 180

==> C) 270

Answer:

no

Step-by-step explanation:

Answer:

its no

Step-by-step explanation: