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Charra [1.4K]
3 years ago
13

What is 20+30 x 35-30(23-2)^2 Please, im giving brainliest!!

Mathematics
2 answers:
statuscvo [17]3 years ago
7 0

Answer:

-12160

Step-by-step explanation:

See image for the step-by-step.

denis-greek [22]3 years ago
3 0

Answer:

-12160

Step-by-step explanation:

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May someone please help me
fiasKO [112]

a. equate yourequation to zero then yourx intercepts are (-6;0) and (4;0)

b. to find the y-intercept...let x=0...where there is x put 0 and your answer is -24 therefore the y-intercept is (0;-24)

8 0
3 years ago
A parking lot covers 32,420 square feet .what id its area to the nearest thousand feet
Mademuasel [1]

Answer: 32,000

Step-by-step explanation:

the thousands place (1000) is the fourth number to the left of the decimal, so round that one either up or down based on the number just one spot closer to the decimal, in this case, the hundreds place (100).

so we have 32,420

we can ignore the numbers that are going to become zeros as a result of the rounding . .

32,400

let's round 32,XXX either up or down based on the value in the hundreds place. if that value is 5 or greater, than we round up. if it is less than 5, than we round down.

4 is in the hundreds place, so we round down

32,000 is the answer

Hope this helps!!! Good luck!!! ;)

6 0
3 years ago
Trevor is swimming laps to raise money for the local food bank. He earns $1.85 per lap and has already swum 23 laps.
Studentka2010 [4]

Answer: L greater than 31

Step-by-step explanation:

Trevor is swimming laps to raise at over 100 dollars for the local food bank. He earns $1.85 per lap and has already swum 23 laps.

This means that the total amount that he has raised is number of laps that he has swum × the amount he earns per lap. Therefore,

Amount that he has already raised

= 1.85 × 23 = $42.55

100 - 42.55 = 57.45

He still needs to raise an amount greater than $57.45

To raise this amount, he needs to swim more laps. Number of laps that he needs to swim will be

57.45/1.85 = 31.05

Approximately 31 laps

Let the number of laps that he needs to swim be L

The inequality to show how many more laps Trevor needs to swim in order to raise more than $100 will be

L greater than 31

4 0
3 years ago
A 6.50 kg crate is suspended from the end of a short vertical rope of negligible mass. An upward force F(t) is applied to the en
borishaifa [10]

Answer:

F=158.86 N

Step-by-step explanation:

We are given that

Mass of crate=m=6.5 Kg

Height,y(t)=(2.80m/s)t+(0.610m/s^3)t^3

We have to find the magnitude of F when t=4 s

Differentiate w.r.t t

v=\frac{dy}{dt}=2.8+3(0.61)t^2

Again differentiate w.r.t t

a=\frac{dv}{dt}=3\times 2(0.61)t

a=3.66tm/s^3

Substitue t=4

a=3.66\times 4=14.64m/s^2

F-mg=ma

Where g=9.8m/s^2

Substitute the values

F-6.5\times 9.8=6.5\times 14.64

F=6.5\times 14.64+6.5\times 9.8

F=158.86 N

5 0
3 years ago
How to multiply fractions with whole numbers without a calculator?
Leona [35]

convert the whole number into an improper fraction then multiply

 example if you have 2 1/2 convert it to 5/2

( multiply whole number by denominator than add the numerator)

4 0
3 years ago
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