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2 years ago

11

Please help :/ I will mark brainlisest

1 answer:

Maslowich2 years ago

6 0

Step-by-step explanation:

First add outer numbers then add inner numbers theninus inner number from outside number I think I had learnt it on grade 1 now I am on 7th standard

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Of the pets in the pet show, 5/6 are cats. 4/5 of the cats are calico cats. What fraction of the pets are calico cats?

kondaur [170]

Answer:

8=135.2

Step-by-step explanation:

if it help u can follow me

4 0

3 years ago

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Find the indicated sum. Select your choice and click Submit to check your answer.

Ivahew [28]

Answer:

$S_4=50$

Step-by-step explanation:

Sum Of Arithmetic Sequence

Given an arithmetic sequence

$a_1,\ a_1+r,\ a_1+2r,....,\ a_1+(n-1)r$

The sum of the n first terms is

$\displaystyle S_n=\frac{(a_1+a_n)n}{2}$

Or equivalently

$\displaystyle S_n=\frac{[2a_1+(n-1)r]n}{2}$

The given sequence is

5, 8, 11 ...

We can see the common difference between terms is r=3

We are asked to find the sum of the terms 2 to 5, it means that

$a_1=8, n=4, r=3$

$\displaystyle S_4=\frac{[2(8)+(4-1)3]4}{2}$

$\displaystyle S_4=\frac{100}{2}$

$\boxed{S_4=50}$

3 0

3 years ago

In how many year the interest will became equal to the principal is rs.1200 is deposited at the rate of 25% in a bank

mrs_skeptik [129]

Given:

Principal = Rs. 1200

Rate of interest = 25%

To find:

The time in which the interest will became equal to the principal.

Solution:

We have,

$P=1200$

$r=\dfrac{25}{100}$

$r=0.25$

If interest is equal to the principal, then

$Amount=Principal+Interest$

$Amount=1200+1200$

$Amount=2400$

The formula for amount is:

$A=P\left(1+r)^n$

Substituting $A=2400, P=1200, r=0.25$ in the above formula, we get

$2400=1200(1+0.25)^n$

$\dfrac{2400}{1200}=(1.25)^n$

$2=(1.25)^n$

Taking log on both sides, we get

$\log2=\log(1.25)^n$

$\log2=n\log(1.25)$ $[\because \log a^b=b\log a]$

$\dfrac{\log2}{\log(1.25)}=n$

$n\approx 3.11$

Therefore, the interest will became equal to the principal in about 3.11 years.

4 0

2 years ago

Name the types of angles shown.

Sladkaya [172]

Answer:

All except complementary angle.

Step-by-step explanation:

Complementary angles equal 90 degrees.

6 0

3 years ago

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Line AB contains points A (4,5) and B(9,7). What is the slope of AB

ki77a [65]

This line crosses the point (4,5)so we can make an equation to find the slope:
$4 = a \times 5 \\ 4 = 5a \\ a = \frac{4}{5}$
hope this helps

8 0

3 years ago

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