find the zeros of each function by factoring. f(x)=2x^2-7x-4 plzzz helpp meeee plzz

Answers

Answer 1
2x^2 - 7x - 4
Multiply 2 and 4
x^2 - 7x - 8
(x - 8) (x + 1)
Divide by 2 for both numbers to bring the 2 back that was multiplied
(x - 4) (2x + 1)

(x - 4)
x - 4 = 0
+4 on both sides
x = 4

(2x + 1)
2x + 1 = 0
-1 on both sides
2x = -1
/2 on both sides
x = -1/2

Answer:
x = 4
x = -1/2

Related Questions

Which graph represents the inequality x > 3?

Answers

Answer:

Pretty sure that the answer is C.

Step-by-step explanation:

Answer:

It's A I'm pretty sure

Step-by-step explanation:

What is the equation of the line that is parallel to y=3x+8 and passes through the point (-3,4)

Answers

Answer:

The parallel equation would be: y=3x+13

Two students created models of the same building. One student used a scale factor of 3 centimeters (cm) = 15 meters (m). The second student used a scale factor of 4.5 = 15 m. The height of the original building is 20 meters. What is the difference between the heights of the two students' models?

Answers

Answer:

2 cm

Step-by-step explanation:

First student:

Scale factor = 3 cm to 15 m

Height of original building = 20 m

Height of the first student's model = [tex] \frac{20*3}{15} = \frac{60}{15} = 4 cm [/tex]

Second student:

Scale factor = 4.5 cm to 15 m

Height of original building = 20 m

Height of the first student's model = [tex] \frac{20*4.5}{15} = \frac{90}{15} = 6 cm [/tex]

Difference between the heights of the two students' models = 6 cm - 4 cm = 2cm

i am a three digit whole number. my tens digit is 5. i am divisible by 4. i am divisible by 9. each of my digits is different. my ones digit is greater than my tens digit. my hundreds digit is greater than my ones digit. i am less than 800. i am divisible by 7. my ones digit is 6.

Answers

Answer:

756

Step-by-step explanation:

Identify the correct solution for -10+(-16)-10

Answers

The answer would be -36

PLS ASAP HELP ME I AM TIMED!!!

Answers

The anser is b hope it heped


Tammy folded a piece of paper in half 5 times. How many boxes were created
only counting one side of her paper?

Answers

Answer:

I think the answer is 16

Step-by-step explanation:

I folded a paper in half 5 times like it said and counted the squares one the first side of it and there was 16

I am so sorry if that's wrong, hope it helps!

Rewrite in simplest terms: -5s-7(8s-1)

Answers

Answer:

-61s+7

Step-by-step explanation:

-5s-7(8s-1)

Distribute

-5s -56s +7

Combine like terms

-61s+7

Answer:

-61s+7

Step-by-step explanation:

-5s-7(8s-1)

-5s-56s+7

-61s+7

Some information about the surface area and volume of two similar solids has been given fill in the missing value. ​

Answers

Answer:

1216 yd³

Step-by-step explanation:

GivenSolid 1                                   |     Solid 2Surface area = 1100 yd²       |     Surface area = 176 yd²Volume = 19000 yd³            |     Volume = xSolids are similar

Let the scale factor be k, then

Surface area is a product of 2 dimensions so the ratio of surface area of the solids would be k²Volume is the product of 3 dimensions so the ratio of volumes would be k³

Considering this we have:

1100 = 176*k²19000 = x*k³

The value of x is

x = 19000/k³

Finding the scale factor

k= √1100/176 = 2.5

So the answer is

x = 19000/2.5³ = 1216 yd³

Steve has 50 pieces of gum. He gave x amount of friends 6 pieces each. How many pieces of gurn does Steve have left?

Answers

Assuming that Steve has as many friends as possible, he has 2 pieces of gum left. He gave each friend six pieces so that means he can’t have more than 8 friends (6x8=48) this is the maximum amount he can give to friends while being equal. Now that we know he gave away 48 stick you subtract that from the total to get what would be left over. So the answer is that Steve has 2 pieces of gum left and should really give me one lol.

Convert 340 centimeters into inches. Round your answer to the nearest whole number.

Answers

On unit conversion the value of 340 cm is 134 inches.

What is unit conversion?

Unit conversion is a multi-step procedure that involves adding, subtracting, multiplying, or dividing by a conversion factor. Additionally, rounding and choosing the appropriate number of significant digits may be necessary during the process.

There are 2.54 centimeters in one inch.

Perform unit conversion to convert cm to inch.

To convert 340 centimeters into inches, divide 340 by 2.54 -

340 cm ÷ 2.54 cm/inch

340 / 2.54

≈ 133.8583 inches

Rounding to the nearest whole number, it is obtained -

134 inches

Therefore, 340 centimeters is approximately equal to 134 inches when rounded to the nearest whole number.

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what number do you need to multiply by 100 to get the same result as 16.2 divided by 10 explain

Answers

Answer:

You would need to multiply 100 by 0.0162. 100 x 0.0162. Thus the answer is 0.0162

Step-by-step explanation:

By dividing 16.2 by 10 you get the answer 1.62. 1.62 is 1.62% of 100 which in decimal form is 0.0162. This gives you the number you need to multiply by 100 to get the same number as you would dividing 16.2 by 10.

The system of equations graphed below has how many solutions?
A. Infinitely many
B. 2
C. 1 D. 0

Answers

Answer:  D) 0

========================================================

Explanation:

Each given equation is in the form y = mx+b, with m as the slope

The slope of each equation is m = -3/2

Since the lines have the same slope, but different y intercepts, we have two parallel lines.

Parallel lines never intersect, so we don't have any solutions.

A solution to a system is an (x,y) point that is on both lines at the same time, making both equations true simultaneously.

A system with no solutions is considered inconsistent.

2. Vertical angles CAN NOT be which of the following?
a supplementary
b) complementary
c) adjacent
d) obtuse

Answers

Vertical angels cannot be...

Answer: C adjacent
Adjacent

Adjacent angles share a common vertex and side while vertical angles are across from each other

PLEASE HELP ME PLEASE

Solve the equation

2/3x - 2 = 7

13 1/2

-13 1/2

15 1/2

6

Answers

Step-by-step explanation:(2/3)x - 2 = 7

(2/3)x = 7 + 2

(2/3)x = 9

2x = 9 × 3

x = 27/2

:. x = 13 1/2

Multiply and simplify 8 times 3/10

Answers

Answer:

2.4 Hope this helped

Step-by-step explanation:

8/1 x 3/10

24/10

2.4

Answer:

2.4

Step-by-step explanation:

8 turns into 8/1, then you multiply

8/1 * 3/10

Multiply 8 * 3 (24)

Multiply 1 * 10 (10)

You then get 24/10

24/10 = 2.4

Explain how to determine the number of solutions using the coefficients and constants.

Answers

hope this helps you with the question

5w+3=18
Simplify your answer as much as possible

Answers

Answer:

w=3

Step-by-step explanation:

Step 1: Subtract 3 from both sides.

5w+3−3=18−3

5w=15

Step 2: Divide both sides by 5.

5w

/5

=

15

/5

w=3

what is the value of the equation g(^x-1) -2 =25

Answers

The value of the equation

Please give an explanation with your answer and use proportions!! Due soon!!

Answers

Answer:

$80 is not enough to pay for the service

Step-by-step explanation:

Let us explain how we can solve the problem with tax added

If the cost of an item is 100% and the tax added is 5%, what is the cost after taxYou should add 100% + 5% = 105%, the cost after tax is 105%To change the number from percentage form to the normal form divide it by 100

In the question the given is:

∵ The fee to groom the dog is $75

∵ The tax added is 6.75%

→ Assume that the fee of groom = 100%

The fee after-tax = 100% + 6.75% = 106.75%

→ To find the fee after-tax multiply the fee before the tax by

   the percentage fee after-tax, remember to change the percentage

   to a normal number

∴ The fee after-tax = 75 × 106.75%

∴ The fee after-tax = 75 × (106.75/100)

The fee after-tax = $80.0625

∵ He has $80

$80.0625 > $80

∴ That means he has not enough money to pay for the service

$80 is not enough to pay for the service

Solve to determine if the following expressions are equivalent: 8a - 4 + 2a and 6a + 4.

Answers

Answer:

NOPE

Step-by-step explanation:

8a-4+2a

10a-4 simplified

10a-4 and 6a+4, these do not match

The following expression, 8a - 4 + 2a and 6a + 4, are not equal.

What is expression?

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation.

Given two expression 8a - 4 + 2a and 6a + 4.

Simplifying the first expression:

8a - 4 + 2a

=> 10a -4

That is not equal to the second expression 6a + 4.

therefore, the following expressions are not equivalent 8a - 4 + 2a and 6a + 4.

Learn more about expression here:

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the question is in the picture ​

Answers

USE SOCRACTIC IT WOULD REALLY HELP WITH THIS QUESTION

A gas station buys cans of pop for $0.60 and marks up the price 75%.
What does the gas station charge per can?


Answers

Answer:

$1.05

Step-by-step explanation:

$.6 × 1.75 = 1.05$

which expression is equivalent to -1/2(3 - 2/5)?

Answers

Answer:

The answer is -3 1/2 - 1/5

so it's C.

What is the value of x?

40
70
140
160

Answer: 70

Answers

Answer: the answer is 70

Step-by-step explanation:

The value of x is 70.

What is angle Sum Property?

According to the triangle's "angle sum property," a triangle's angles add up to 180 degrees. Three sides and three angles, one at each vertex, make up a triangle. The sum of the interior angles in a triangle is always 180, regardless of whether it is acute, obtuse, or right.

Given:

As, the two sides of Triangles are and angles opposite to equal sides are also equal.

So, the measure of two angles are x.

Now, using Angle Sum Property

x+ x + 40= 180

2x + 40= 180

2x = 140

x= 70

Hence, the value of x is 70.

Learn more about Angle Sum Property here:

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2. What is the percent increase in users between 2018 and 2019?

Answers

Users being drug wise or what? I don’t quite understand. Please specify in the comments and I’ll try to help

need help 2x = 2(x-3)

Answers

Answer:

0=-6 There can't be an answer for x

Step-by-step explanation:

1: distribute: 2x=2x-6

2: isolate x by subtracting 2x from both sides: 0=-6

It’s 0 , there’s no solution

!!!!!!!!!!! Help (Measuring Angles)

Answers

Answer:

Angle DGF = DEF

Step-by-step explanation:

Since all the angles are congruent in the diagram and the hypothenuses are both congruent, it makes the other triangle, DEF congruent to DGF.

In other words, sense all 3 angles are congruent and they share a side, DEF is congruent to DGF.

2x2+2=402 prime factorization

Answers

9514 1404 393

Answer:

as written: 2(x² +1) = 2·3·67as standard-form quadratic: 2(x² -200) = 0

Step-by-step explanation:

A prime factorization of a polynomial is one in which each factor cannot be factored further using integers. Here, we can remove a factor of 2 from each side to get ...

  2(x² +1) = 2(201)

The constant 201 can be further factored to primes:

  2(x² +1) = (2)(3)(67)

__

If the equation is written in standard form:

  2x² -400 = 0

again, a factor of 2 can be removed:

  2(x² -200) = 0

If the binomial constant were a perfect square, this could be factored further. It is not, so it can't.

Mrs. Adams bought cans of pears and cans of mixed fruit.

She bought a total of 7 cans at a cost of $21.50.
Each can of pears cost $3.20, and each can of mixed fruit cost $2.90.

Answers

Answer:

She got 3 cans of mixed fruit

Step-by-step explanation:

3.20*4=12.80 2.90*3=8.70 12.80+8.70=21.50

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