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3 years ago

Mary wants to buy a bicycle that cost 280$

Mathematics

1 answer:

Ivanshal [37]3 years ago

7 0

Then Mary should get a job

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According to the 1991 census, there are about 43406932 people in our country who speak Urdu. Which of the following is the close

amm1812

According to the 1991 census, there are about 43406932 people in our country who speak Urdu. Which of the following is the closest approximation of this number?

A 4 lakhs

B 43 lakhs

C 4 crores

D 43 crores

→ C 4 crores

Explaination :

2 - Unit place

3-tens place

9- hundred place

6 - thousand place

0- ten thousand place

4 - lakh place

3 - ten lakh place

4 - crore place

hence , closest approximation of this number is 4 crores.

7 0

3 years ago

Find the sum of the arithmetic sequence. -1, 2, 5, 8, 11, 14, 17

muminat

56 is you answer you need.

8 0

3 years ago

Debras fish tank 16 liters of water in it. She plans to add 4 liters per minute until the tank has more than 60 liters. What are

yarga [219]

Debras fish tank 16 liters which mean she have 80 liter

6 0

3 years ago

Given that α and β are the roots of the quadratic equation <img src="https://tex.z-dn.net/?f=2x%5E%7B2%7D%20%2B6x-7%3Dp" id="Tex

siniylev [52]

Answer:

$\large \boxed{\sf \ \ \ p=-11 \ \ \ }$

Step-by-step explanation:

Hello,

$\alpha \text{ and } \beta \text{ are the roots of the following equation}$

$2x^2+6x-7=p$

It means that

$2\alpha^2+6\alpha-7=p \\\\2\beta ^2+6\beta -7=p \\\\$

And we know that

$\alpha= 2\cdot \beta$

So we got two equations

$2(2\beta)^2+6\cdot 2 \cdot \beta -7=p \\\\8\beta^2+12\beta -7=p\\\\ and \ 2\beta ^2+6\beta -7=p \ So \\\\\\8\beta^2+12\beta -7 = 2\beta ^2+6\beta -7\\\\6\beta^2+6\beta =0\\\\\beta(\beta+1)=0\\\\ \beta =0 \ or \ \beta=-1$

For $\beta =0, \ \ \alpha =0, \ \ p = -7$

For $\beta =-1, \ \ \alpha =-2, \ \ p= 2-6-7=-11, \ p=2*4-12-7=-11$

I assume that we are after two different roots so the solution for p is p=-11

b) $\alpha +2 =-2+2=0 \ and \ \beta+2=-1+2=1$

So a quadratic equation with the expected roots is

$x(x-1)=x^2-x$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

3 0

3 years ago

I'll give 20 p to whoever answers 10-16 :D

BartSMP [9]

This is so easy. You should try before posting a question on this site. No offense.

Having said that im still here to help :)

10. 4,2 -3,5
11. Sorry dont know this one
12. Plot a point at -3,-4 label is Resturant
13. Plot a point at 0,-3 label it Beth

I will only post these ones, The others are extremely simple.

6 0

3 years ago