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lara [203]
3 years ago
8

What is this help please

Mathematics
1 answer:
Sholpan [36]3 years ago
3 0
Answer: 3 x 7


Explanation:
So the question is asking you to multiply two prime numbers in order to get 21.
Since 3 and 7 are both prime numbers, you can express 21 as 3 x 7

Hope this helps! :)

Here is a list of prime numbers if it helps you. (prime numbers are in blue):

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Keisha has a total of $6000 to invest in two accounts for 1 year. One account pays 5% simple interest and the other pays 6% simp
adoni [48]

Answer: He invest $2500 in account with rate of interest 5% and invest $3500 in account with 6% of interest so that the total interest earned is $335.

Step-by-step explanation:

Given: The rate of interest for account 1= 5%=0.05

The rate of  interest for account 2= 6%=0.06

Let P be the Principal amount Keisha invested in the account with 5% interest .

Then the amount she will invest in account with 6% interest= 6000-P

Time = 1 year

The simple interest is given by:-

S.I.=Prt

Simple interest for account 1=P(0.05)(1)=0.05P

Simple interest for account 2=(6000-P)(0.06)(1)=360-0.06P

According to the question,

Total Interest =$335

\Rightarrow0.05P+360-0.06P=335\\\Rightarrow\ -0.01P=335-360\\\Rightarrow\ -0.01P=-25\\\Righgtarrow\ P=2500

So, he invest in account with 5% interest= $2500

He invest in account with 6 % interest=$6000-$2500=$3500

8 0
3 years ago
What is the value of x?<br><br> 3<br> 4<br> 6<br> 8
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Hello there.

<span>There were 196 students that participated in a clean-up event at a nearby lake. this is one fourth of the entire student population. write and solve an equation to find the number of students at this school.

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Therefore the number of students in this school is 784.

Hope This Helps You!
Good Luck Studying ^-^</span>
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