2x^2+2=3x help i need a full eplaination

Answer:

Step-by-step explanation:

Construction speed

Time

Road length

We are going to need to multiply to find the total length of road they built.

3 5/6 * 8

23/6 * 8/1

184/6

30.66.. or 30 2/3

Therefore, they built 30 2/3km of road.

Best of Luck!

7x + 7 + 4y = 112

-7 from both sides

Answer:

the second one is 1  7/8 or  15/8 the first one is 3

Step-by-step explanation:

Answer:

Your answer is A 7,040 yards.

Step-by-step explanation:

Answer:

80%

Step-by-step explanation:

Step 1:

16 : 20       Ratio

Step 2:

16/20      Convert to a fraction

Step 3:

4/5 × 20    Simpify  and Multiply

Answer:

80%     Convert to percentage

Hope This Helps :)

Answer:

b

Step-by-step explanation:

Answer:

-25202257301

hope this helped

Step-by-step explanation:

Answer:

A-10%

B-25/100

C-1/2

Step-by-step explanation:

i did it and got it right, hope this helps :D

Answer:

C

Step-by-step explanation:

The answer is c

The x-intercepts of the graph of the function [tex]y = x^2 - 3x - 28[/tex] are x = 7 and x = -4.

To find the x-intercepts of the graph of the function y = [tex]x^2 - 3x - 28[/tex], we need to set y equal to zero and solve for x. The x-intercepts occur when y is equal to zero.

Setting y = 0, we have the equation:

[tex]0 = x^2 - 3x - 28[/tex]

To solve this quadratic equation, we can factor it or use the quadratic formula. Let's use the quadratic formula in this case.

The quadratic formula states that for an equation of the form [tex]ax^2[/tex] + bx + c = 0, the solutions for x can be found using the formula:

x = [tex]ax^2[/tex]

For our equation [tex]0 = x^2 - 3x - 28[/tex], we have a = 1, b = -3, and c = -28. Plugging these values into the quadratic formula, we get:

x =[tex](-(-3) ± √((-3)^2 - 4(1)(-28))) / (2(1))[/tex]

Simplifying further, we have:

x = (3 ± √(9 + 112)) / 2

x = (3 ± √121) / 2

x = (3 ± 11) / 2

This gives us two possible solutions for x:

x1 = (3 + 11) / 2 = 14 / 2 = 7

x2 = (3 - 11) / 2 = -8 / 2 = -4

Therefore, the x-intercepts of the graph of the function y = [tex]x^2 - 3x - 28[/tex]are x = 7 and x = -4.

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Answer: -2u + 15v

Step-by-step explanation:

Hey there!

Step 1: Expand by distributing terms.

4u - (6u - 15v)

Step 2: Remove parentheses.

4u - 6u + 15v

Step 3: Collect like terms.

(4u - 6v) + 15v

Step 4: Simplify.

-2u + 15v

~I hope I helped you! :)~

Answer:

Expanded: 4u-6u+15v Simplified: -2u+15v

Step-by-step explanation:

To expand, distribute the negative three to the terms in the parentheses by multiplying. Because a negative times a negative is a positive, it becomes plus 15v. To simplify, simply add like terms (the u variables).

Answer:

Step-by-step explanation:

Given

a) total amount

b) Interest cost

Answer:

-12.9166666666667

Step-by-step explanation:

(The 6 is repeating do not add the 7)

Answer:

To divide 0.8 divided by 20 she needs to annex a 0 in the hundredths place. So, the quotient is 0.04, and Carly is correct

To divide 0.8 divided by 20 she needs to annex a 0 in the hundredth place. So, the quotient is 0.04, and Carly is correct

It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.

After the division has been done, the quotient is obtained. This signifies that the quotient is the result of dividing a dividend by a divisor.

It is given that,

0.8÷10=0.04

Because she has to annex zero in the hundredth place in order to divide 0.8 divided by 20. The quotient is thus 0.04

Thus, to divide 0.8 divided by 20 she needs to annex a 0 in the hundredth place. So, the quotient is 0.04, and Carly is correct

Carly is correct 0.8÷10=0.04

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Answer:

a. [tex]\tt \frac{1}{9}[/tex]

b. [tex]\frac{1}{16}[/tex]

c. 4

Step-by-step explanation:

[tex]\tt a. \:3^{-2}[/tex]

We can use the negative exponent rule, which states that [tex]\boxed{\tt a^{-n} = \frac{1}{a^n}}[/tex] So, we have:

[tex]\tt 3^{-2} = \frac{1}{3^2} = \frac{1}{9}[/tex]

[tex]\hrulefill[/tex]

[tex]\tt b.\: -2^{-4}[/tex]

We can use the rule that [tex]\boxed{\tt -a^{-n} = (-1)^n \cdot a^n}.[/tex] So, we have:

[tex]\tt -2^{-4} = (-1)^4 \cdot 2^{-4} = 1 \cdot \frac{1}{2^4} = \frac{1}{16}[/tex]

[tex]\hrulefill[/tex]

[tex]\tt c. \:(\frac{1}{2})^{-2}[/tex]

We can use the negative exponent rule, which states that [tex]\boxed{\tt a^{-n} = \frac{1}{a^n}}[/tex]. So, we have:

[tex]\tt (\frac{1}{2})^{-2} = \frac{1}{(\frac{1}{2})^2} = \frac{1}{\frac{1}{4}} = 4[/tex]

Answer:

Step-by-step explanation:

(a) 3^-2 = 1/9

(b) (-2)^-4 = 1/(-2)^4 = 1/16

(c) (1/2)^-2 = 1/(1/2)^2=1 / 1/4 = 4

i'd need a Step-by-step explanation:

Answer:

  -1 < x < 9

Step-by-step explanation:

Eliminate the outer absolute value symbol.

  -3 < |x -4| -2 < 3

Add 2

  -1 < |x -4| < 5

We know that no absolute value can be negative, so this is fully equivalent to ...

  |x -4| < 5

Eliminate the absolute value symbol.

  -5 < x -4 < 5

Add 4

  -1 < x < 9

___

For the graph, we graph the inequality ...

  ||x -4| -2| -3 < 0

The zero crossings are easy to find in this graphing calculator.

Answer:

-1/2 x + 3

bases on this guy's answer I believe the answer is -1/2 x + 3

Answer:

96 more minutes are required to complete the same job with 5 such machines

Step-by-step explanation:

Proportions

We know 6 machines produce 100 boxes of chewing gum in 8 hours. For convenience, we'll work in minutes instead of hours.

The time needed for the 6 machines to complete the job is 8*60=480 minutes.

Considering proportions, if 6 machines complete the job in 480 minutes, then ONE machine would need 6*480 = 2880 minutes.

Now consider 5 such machines working. The time needed would reduce by a factor of 5: 2880/5=576 minutes

Now we know 5 machines would take 576 minutes. That is a difference of 576 - 480 = 96 minutes. Thus,

96 more minutes are required to complete the same job with 5 such machines

Answer: 1 1/2 days because 3/4+3/4 is 1 1/2

Step-by-step explanation:

I did the math can I get brainliest

The number of days taken by Tina to paint the complete room is 3/2 day.

Given that, Tina painted 1/2 of a bedroom in 3/4 a day.

A proportion is an equation in which two ratios are set equal to each other.

Let the number of days taken by Tina to paint one complete bedroom.

Then, the proportion is 1/2 : 3/4 :: 1 : x

⇒ x/2=3/4

⇒ 4x=6

⇒ x=6/4

⇒ x=3/2

Therefore, the number of days taken by Tina to paint the complete room is 3/2 day.

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Answer:

x< 11/7

Step-by-step explanation:

2

3(5+1) ÷ 3² = 3(6) ÷ 3²

= 18 ÷ 3² = 18 ÷ 9 = 2

Answer:

Step-by-step explanation:

√

12

−

√

108

Simplify each term.

2

√

3

−

6

√

3

Subtract  

6

√

3

from  

2

√

3

.

−

4

√

3

The result can be shown in multiple forms.

Exact Form:

−

4

√

3

Decimal Form:

−

6.92820323

…

Answer:

Range is $105

Step-by-step explanation:

10*35=350

7*25=245

350-245=105

The graph of the system of equations is in the image at the end, the solutions are:

(-0.85, -1.85)

(5.85, 4.85)

Here we have the system of equations:

y = x - 1

y = (1/3)*(x + 2)*(x - 4)

To solve it graphically, just graph both equations in the same coordinate axis and find the points where the graphs intercept.

In the image at the end you can see where the graphs intercept.

There we can see that the two solutions are:

(-0.85, -1.85)

(5.85, 4.85)

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Answer:

0.05?

Step-by-step explanation:

0.2 are taken by oarents

3/4 = 0.75 were taken by parents

0.20 + 0.75 = 0.95

1.00 - 0.95 = 0.05