Ask question

Ask question

All categories

4 years ago

11

Sanjib has 348 marbles .Harry has 100fewer marbles than sanjib.Ari has 10more marble than Harry.Write the number of marbles each

child has

1 answer:

RoseWind [281]4 years ago

8 0

Hi!

Sanjib has 348 marbles.

Harry has 100 fewer than Sanjib, which is 348 - 100 = 248 marbles.

Ari has 10 more marbles than Harry, which is 248 + 10 = 258 marbles.

Hope this helps!

You might be interested in

Anyone know this i cant figure it out

allochka39001 [22]

Answer:

True False True

Step-by-step explanation:

1. A circle has 360 degrees in its interior. 360 - 130 (this is given) degrees = 230 degrees. This means it's TRUE

2. The area of the shaded sector is the degrees in the central angle that contains the sector, multiplied by the area of the circle. This means that the area is pi*r^2*angle. The radius is 10, and the angle is 230 degrees, so the answer is 100*230/360 pi = 23000/360 pi, which simplifies to 575/9 pi. This is FALSE.

3. The area of the shaded sector is area of the circle - area of the shaded sector. The area of the circle is pi r^2, which is 100 pi. 100 pi - 575/9 pi = 325pi/9, so this is TRUE

7 0

3 years ago

When was a shaduf in ancient egypt used?

Lisa [10]

Shadufs were used as a means of transporting water for irrigation in ancient Egypt. They were used on canals and rivers to bring water to where it was needed.

6 0

3 years ago

Read 2 more answers

Explain how to find the product of the sum and difference of two terms. Give an example with your explanation.

hjlf

Given two terms a, b.
Sum of terms = a+b
Difference of terms = a-b
Product of sum and difference (do not forget parentheses)
=(a+b)(a-b)
which can be expanded as=a^2-b^2

We can make use of this property to calculate with lightning speed, assuming you know the squares of numbers.

For example,
8*6=(7+1)(7-1)=7^2-1^2=48
9*7=(8+1(8-1)=8^2-1^2=64-1=63
5*15 = (10+5)(10-5)=10^2-5^2=75
22*18=(20+2)(20-2)=20^2-2^2=400-4=396
63*57=(60+3)(60-3)=60^2-3^2=3600-9=3591
128*112=(120+8)(120-8)=120^2-8^2=14400-64=14336
We can go on and on!

8 0

3 years ago

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. Sup

Verizon [17]

Answer:

There is evidence to said that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than 0.18

Step-by-step explanation:

First, we need to define the null and alternative hypothesis as:

H0: p = 0.18

H1: p > 0.18

Where p is the proportion of shoppers that said that they prefer to buy generic instead of name-brand products.

Then, we can calculated the test statistic using the following equation:

$z=\frac{p'-p}{\sqrt{\frac{p(1-p)}{n} } }$

Where p' is the proportion of the sample and n is the size of the sample.

Replacing p by 0.18, p' by 0.21 (315/1500 = 0.21) and n by 1500, we get:

$z=\frac{0.21-0.18}{\sqrt{\frac{0.18(1-0.18)}{1500} } }=3.02$

So, using the standard normal table, the p-value is calculated as:

p-value = P(z>3.02) = 0.0013

Additionally, At a 5% significance level, the critical value is the z value that let 5% on the right tail, so it is calculated as:

P(Z>z) = 0.05

Critical Value = 1.64

Finally, taking into account that the 5% significance level is higher than the p-value and the critical value is higher than the test statistic, we reject the null hypothesis and there is evidence to said that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than 0.18

7 0

3 years ago

Find y so (-2, y) is a solution to 3x+5y=8

Yuri [45]

Answer:

y=14/5 or 2.8

Step-by-step explanation:

3(-2)+5y=8

-6+5y=8

+6 +6

5y=14

/5y /5y

y=14/5

4 0

3 years ago