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2 years ago

3 + 2 x 7 - 30(^2) help me

1 answer:

3 0

There is no solution to this problem. Why? Well, see below for an explanation!

We can initially solve this problem using PEMDAS. Where we go wrong will be identified later. The P stands for Parenthesis, but there are none in this equation so we can skip that step. Next is E, which stands for Exponents. We do have an exponent, but it is separate from the problem. That would deem the problem invalid to solve because there is no base number for the exponent to be solved. Disregarding the exponent, we can solve by using M, which means Multiplication.

2 x 7 = 14

Next step, we can simplify to make the equation a tad bit neater.

3 + 14 - 30

Next up is D, meaning we need to divide. There are no numbers to divide though, so this step can be skipped.

Next step would be A, meaning we need to add.
3 + 14 = 17

Next step, we can simplify to make the equation neater as stated above.

17 - 30

17 - 30 = -13.

Disregarding the exponent, your answer would be -13. Including the exponent, however, would make the equation irrelevant. If you need extra help understanding this, let me know and I will gladly assist you.

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Can someone pls help w finding the x and y intercepts of this? y=x^2-2x

AysviL [449]

Answer:

y-intercept is 0, x-intercept is 0 and 1

Step-by-step explanation:

For y-intercept, x=0 :

${ \tt{y = {(0)}^{2} - 2(0) }} \\ { \tt{y = 0}}$

For x-intercept, y=0 :

${ \tt{0 = {2x}^{2} - 2x }} \\ { \tt{2x(x - 1) = 0}} \\ { \tt{x = 0 \: \: and \: \: 1}}$

6 0

2 years ago

Can someone help me really quick

Elena L [17]

In your 30° - 60° - 90° triangle, the ratios of the sides are
.. PR : QR : PQ = 1 : √3 : 2

A) QR/PQ = (√3)/2 . . . . . TRUE

B) PR/PQ = 1/2, not (√3)/2 . . . . false

C) QR/PR = (√3)/1 . . . . . TRUE

D) PQ/PR = 2/1, not √3 . . . . . . .false

E) QR/PR (see C) . . . . . . . . . . .false

F) PQ/PR = 2/1 . . . . . . . .TRUE

8 0

3 years ago

Please help me with this math problem!! Will give brainliest!! :)

lora16 [44]

Answer:

$2x^3-3x^2-10x+15\\$

Step-by-step explanation:

To find (fg)(x), we have to look at f(x) and g(x) and multiply the two quantities together. We are already given the two quantities individually so all that is left is the multiplication:

$(fg)(x)=(-2x+3)(5-x^2)=-10x+2x^3+15-3x^2\\$

If we reorder the terms to go from highest degree to lowest, we get our final answer to be the following:

$2x^3-3x^2-10x+15$

6 0

1 year ago

A pendulum is raised to a certain height and released from point A, as shown in the image below. At its release, the pendulum is

sweet-ann [11.9K]

The maximum height that the pendulum can reach will be 45 meters.

<h3>How to calculate the height?</h3>

It should be noted that the total energy at A should be equal to the total energy at B.

Therefore, this will be calculated thus:

1/2(14)² + 10(35) = 1/2(0)² + mgH

98 + 350 = 10H

448 = 10H

H = 448/10

H = 44.8 meters

H = 45 meters approximately

Learn mote about height on:

brainly.com/question/983412

#SPJ1

7 0

2 years ago

Read 2 more answers

The data manager for a state political party gathered data to determine how many citizens would support the party's senate candi

Mama L [17]

Answer:

The approximate 90% confidence interval is;

70,244 to 70,732

Step-by-step explanation:

Here, we want to calculate the approximate 90% C.I for the situation

Mathematically;

CI = mean ± (z * SD)/√n

From the question;

mean = 70,438

SD = 645.3

n = 30

we can get z from the CI table

90% CI is same as; 1.645 z-score

So , substituting these values;

CI = 70,438 ± ( 1.645 * 645.3)/√30

CI = 70,438 ± 194

So the CI = 70,438 -194 to 70,438 + 194

= 70,244 to 70,732

8 0

3 years ago

Read 2 more answers