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2 years ago

What is the estimate of the product of 68×21

Mathematics

2 answers:

Butoxors [25]2 years ago

7 0

68*21
70*20
1400

OR

68*21
1428
1430

Aleks [24]2 years ago

4 0

I believe that you multiply 68*21 and get 1,428 and you round it to what ever place value you are round to

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You have invested $2000 at 3.75% annual interest. How much money do you have after 20 years?

lbvjy [14]

Answer:

$3500

Step-by-step explanation:

Let's use PRT/100 to see what will be the total amount.

Total amount = Interest + Principle

Solution:

PRT/100 = Interest
=> 2000 x 3.75 x 20 years/100
=> 20 x 3.75 x 20 = Interest
=> 2 x 2 x 375 = Interest
=> 4 x 375 = Interest
=> 1500 = Interest
=> Total amount = 1500 + 2000
=> Total amount = $3500

Hence, after 20 years, the amount earned is $3500.

6 0

2 years ago

FIRST ONE TO ANSWER GETS A BRAINLY!!!! PLZ ANSWER AND HELP ME!!! PLS ALSO TELL HOW YOU GOT THE ANSWER!!!

KengaRu [80]

Answer:

Square root of 87.35 will be plotted between 9 and 10 as shown below.

Step-by-step explanation:

We are given that, 'The number line is numbered in tenths'

Also, the square root of 87.35 is given by,

$\sqrt{87.35}=9.4$

That is, we have to plot the point 9.4 on the number line numbered in tenths.

As, 9.4 will lie between the points 9 and 10.

Thus, we get that square root of 87.35 will be plotted between 9 and 10 as shown below.

8 0

3 years ago

Rewrite the function y= x^2 + 14x + 4 in vertex form

Step2247 [10]

Vertex form is basically commplete the square
y=a(x-h)^2+k

y=x^2+14x+4
take 1/2 of 14 and square it, (7^2=49)
add that and its negative to right side
y=x^2+14x+49-49+4
factor perfect squaer
y=(x+7)^2-49+4
y=(x+7)^2-45

answer is A

4 0

2 years ago

4a - 7 < 2a + 1 (solve it)

liberstina [14]

This is answer and work if you need it. It gets easier as you learn how to do it. your welcome homie

3 0

3 years ago

Determine the value of a, b, and c for the quadratic equation: 4x2- 8x = 3

Rufina [12.5K]

Answer:

B. a = 4, b = -8, c = -3

Step-by-step explanation:

The quadratic equation given is:

$4x^2- 8x = 3$

The general form of a quadratic equation is given as:

$ax^2 + bx +c = 0$

Let us put the given equation in this form and then compare with the general form of the quadratic equation.

$4x^2- 8x = 3\\\\4x^2 - 8x - 3 = 0$

Therefore, by comparing:

a = 4

b = -8

c = -3

The correct option is B

4 0

3 years ago