how do i find the amount of solutions to an quadratic equation by looking at it for example "How many real solutions are there to the equation x2−7x+12=0?"

Answer:

Either 4, 22, or 44

Step-by-step explanation:

Choose one :)

Thank you!

Answer:

4

2+2=4 it is easyyy

Answer:

=166.66% markup

Step-by-step explanation:

1800/300 = $6 a shirt

If they're being sold for $10

10/6 =5/3

=1.666

x100

=166.66% markup

Answer:

c

Step-by-step explanation:

i took the test.

Answer:

57/41

Step-by-step explanation:

41 * x = 57

x = 57/41

Answer:

We can think in the area as:

A rectangle of 100m by 64m

And two half circles (o a whole circle if we combine them) of diameter = 64m

Then we need to calculate the area of these two figures and then sum them.

The area of a rectangle of width W and length L is:

A = A*L

then the area of the rectangle will be:

A1 = 100m*64m = 6400m^2

The area of a circle of diameter d is:

A = pi*(d/2)^2

in this case, d = 64m

pi = 3.14

Then:

A2 =  3.14*(64m/2)^2 = 3215.35m^2

The total area of the field is:

A = A1 + A2 = 6400m^2 + 3215.35m^2 = 9615.36 m^2

Now, we know that the cost per square meter is $5.00

Then the total cost will be:

Cost = A*$5.00/m^2 = 9615.36 m^2*$5.00/m^2 = $35215.36

Answer:

132 degree

Step-by-step explanation:

a and b are parallel and c is a transversal

so 2 and 3 are interior and they both equal 180

so 3 = 180-48= 132

Answer:

m<3=138

Step-by-step explanation:

m<2=42

m<1=m<3

180-42=138

m<1=138 m<3=138

m<1 and m<3 are alternate interior angles

Answer:

irrational numbers is in the red rectangle, rational numbers is outside both circles on the left, integers is in the purple circle, whole numbers is in the blue circle

false

true

true

true

Step-by-step explanation:

A, D

Step-by-step explanation:

Cost ($) = C

lbs (Blueberries) = W

One pound of blueberries costs $2.75 because to find how much 1 lb is you need to divide by 6.

6 is the number of pounds at that point in the graph, so you divide both the pounds and cost by 6 to find how much 1 lb is.

To find how much 5 lbs costs, multiply both the cost and number of pounds ($2.75 to 1 lb) by 5.

2.75 * 5 is 13.75 (This means C is wrong)

Do the same but with 12 for D

2.75 * 12 is 33, so D is correct

You could do the same method as above for E, but the easier way to do this is to see that the relationship of 3:9 is equal to a 1:3 ratio, which is the same as what the pounds to cost ratio is (which is 1:2.75)

Hope this helps! ^_^

-TheUnknownScientist

Answer:

Step-by-step explanation:

1.

Domain is the set of x-values

As per graph the domain is

2.

g(f(x)) is, replacing x with f(x) = 4x

Answer:

A.  fourteen sixteenths

Step-by-step explanation:

[tex]1\frac{3}{4} x \frac{2}{4}[/tex]

[tex]\frac{7}{4} x \frac{2}{4}[/tex]

[tex]\frac{14}{16}[/tex]

Hope I helped you out!

~PumpkinSpice1

♥☼☺

Answer:

A it didnt let me answer at first and it dose now

Step-by-step explanation:

Answer:

The graph of the line [tex]y=\frac{2}{3}x+3[/tex] that contains the point (-3,1) with a slope of 2/3 is attached below.

Step-by-step explanation:

We know that the slop-intercept form of the equation is

[tex]y=mx+b[/tex]

where m is the slope, and b is the y-intercept.

Given the slope = m = 2/3, and point (-3, 1)

[tex]1=\frac{2}{3}\left(-3\right)+b[/tex]

[tex]-\frac{2}{3}\cdot \:3+b=1[/tex]

[tex]-2+b=1[/tex]

[tex]b=3[/tex]

so the equation of line will be:

[tex]y=mx+b[/tex]

[tex]y=\frac{2}{3}x+3[/tex]

Also, the graph of the line [tex]y=\frac{2}{3}x+3[/tex] that contains the point (-3,1) with a slope of 2/3 is attached below.

Answer:

8.97 %

Step-by-step explanation:

error is 8.5 - 7.8 inches = 0.7 inches

now

x % of 7.8  = 0.7

7.8x/100 = 0.7

x = 70/7.8 %

= 8.97 %

Answer:

Jo's estimate was 109% the actual answer

Step-by-step explanation:

109% of 7.8 is 8.502, round up to 8.5

May I have brainliest please? :)

Answer:

11700

Step-by-step explanation:

Answer:

correct good job!!!

Step-by-step explanation:

Answer:

the answer is $5.5

Step-by-step explanation:

Answer:

what does d equal?

Step-by-step explanation:

Answer:

j =12 you have to combine like terms which is all and then it will give u 12

Answer:

x=−4+√22 or x=−4−√22

Step-by-step explanation:

Substitute all values in the quadratic formula.

Solve.

Answer:

[tex]\boxed {\sf x= {{ - 4\pm \sqrt{22} }}}[/tex]

Step-by-step explanation:

The quadratic equation is used to find the roots of a quadratic. The formula is:

[tex]x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}[/tex]

when  [tex]{ax^2 + bx + c = 0}[/tex]

We are given the quadratic: [tex]x^2+8x-6=0[/tex]

If we compare the given quadratic to the standard form of a quadratic, then:

[tex]a= 1\\b=8 \\c= -6[/tex]

Substitute the values into the formula.

[tex]x = \frac{{ - 8\pm \sqrt {8^2 - 4(1)(-6)} }}{{2(1)}}[/tex]

Solve inside the radical first.

Solve the exponent.

[tex]x = \frac{{ - 8\pm \sqrt {64 - 4(1)(-6)} }}{{2(1)}}[/tex]

Multiply 4, 1, and -6.

[tex]x = \frac{{ - 8\pm \sqrt {64 - -24}}}{{2(1)}}[/tex]

Add 64 and 24 (2 negative signs become a positive)

[tex]x = \frac{{ - 8\pm \sqrt {88}}}{{2(1)}}[/tex]

Solve the denominator.

[tex]x = \frac{{ - 8\pm \sqrt {88}}}{{2}}[/tex]

The radical can be simplified. 88 is divisible by a perfect square: 4

[tex]x= \frac{{ - 8\pm \sqrt {4}\sqrt{22} }}{{2}}[/tex]

Take the square root of 4.

[tex]x= \frac{{ - 8\pm 2\sqrt{22} }}{{2}}[/tex]

Divide by 2.

[tex]x= {{ - 4\pm \sqrt{22} }}[/tex]

The roots are: x=0.690416  and x=−8.69042

Answer:

10 units

Step-by-step explanation:

600 units= 1 hour

1 hour= 60 minutes

600 units= 60 minutes

1 minute=600/60

1 minutes =10 units

Hope this helped! :)

Answer:

b

Step-by-step explanation:

Answer:

The answer is C, 2/9

Step-by-step explanation:

Since there 18 marbles in total and 4 blue marbles, that makes the probability 4/18. Although, 4/18 has to be simplified, which is 2/9

Answer:

40 cans weigh over 14.7 ounces

Step-by-step explanation:

Given

Mean = 14 ounces

SD = 0.7

We have to find the z-score for 14.7 first

[tex]z = \frac{14.7-14}{0.7}\\z = \frac{0.7}{0.7} = 1[/tex]

As we have to find the number of cans greater than 14.7, forst we will find the area to the left of obtained z-score and then subtract from 1.

So,

P(z<1) = 0.8413

Now,

P(z>1) = 1 - P(z<1) = 1-0.8413 = 0.1587

As the total number of cans is 250,

The cans which weigh over 14.7 are:

= 0.1587 * 250

= 39.675

Rounding off to nearest whole number

40 cans

Hence,

40 cans weigh over 14.7 ounces

Answer:

40 cans

Step-by-step explanation:

round your final answer to get 40

it will take 1 hour to catch up to train a but if the question means from as soon as train a leaves, it is 3 hours.

The time taken by train B to cover the distance of 56 km when the train at the station is in 1 hour.

It is the study of the motion of a body without considering mass. And the reason behind them is neglected.

Train A leaves a station traveling at 28 km/hr.

Two hours later train B leaves the same station traveling in the same direction at 84 km/hr.

The distance traveled by the train A in two hours will be

[tex]\rm D_A=28 \times 2 = 56 km[/tex]

Then the distance between the trains when train B is at the station is 56 km.

Then the relative speed of the train will be

[tex]\rm V_{BA} =84 - 28 = 56 \ km/hr[/tex]

Then the time taken by train B to cover the distance of 56 km is in 1 hour.

More about the kinematics link is given below.

https://brainly.com/question/25638908

Answer:

plz

Step-by-step explanation:

thx

Answer:

its 4 hours

Step-by-step explanation:

Answer: you have to divide

Step-by-step explanation:

Answer:

78  

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

The correlation Coefficient gives the measure of the strength and direction of the relationship between two variables. - 0.833 depicts a strong negative relationship. Hence, one can be confident that the predicted value will be close to the actual Value.

The Correlation Coefficient, R ranges from - 1 to 1, with values closer to - 1 and 1 representing strong negative and positive relationship respectively, which is only achieved of the data is modeled very well.

Therefore, since, - 0.833 is a strong correlation Coefficient, then we can be confident in the predicted value.

Learn more : https://brainly.com/question/19805544

Answer:

$22.5

Step-by-step explanation:

multiply 900 by .025 to get 22.5.

When you multiply by a percentage to find an ammount, move the decimal place over to the left by 2 places and then multiply by the number (in this case 900). Whatever number you recieve is the answer.

The total commission Tyler's brother was earn is $22.5 and this can be determined by using the unitary method.

Given :

The following steps can be used in order to determine the total commission Tyler's brother was earn:

Step 1 - The unitary method can be used in order to determine the total commission Tyler's brother was earn.

Step 2 - According to the given data, he sold $900 worth of shoes which is 100% value.

Step 3 - If 100% is $900 then the value of 2.5% is:

[tex]=\dfrac{2.5}{100}\times 900[/tex]

Step 4 - Simplify the above expression.

= $22.5

For more information, refer to the link given below:

https://brainly.com/question/11897796