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2 years ago

14.Evaluate the expression 4x2+3y for x = 5 and y =6.answer?

Mathematics

2 answers:

Marat540 [252]2 years ago

6 0

Step-by-step explanation:

Given: x=5 and y=6

=>4x2+3y

=> 8+3(6)

=> 8+18

=> 26

Hope it helps 

AnnyKZ [126]2 years ago

3 0

The value of this expression is 58

Algebraic expression is a mathematical sentence that involves all mathematical operations.

In an algebra - a real number is always accompanied by some letter, which can represent a variable or unknown.

— To solve this expression, just: change the letters for the numbers and multiply/add.

⚘ Resolution

$\large \sf 4x2+3y$

$\large \sf 4 \cdot 5 \cdot 2 +3 \cdot 6$

$\large \sf 40 +18$

$\red{\boxed{\boxed{\green{\large \sf \ 58 \ }}}}\\$

Therefore, the value of this expression will be 58

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Ivan biked 1 whole 2/3 on Monday, 2 wholes 1/3 hours on Tuesday, and 2 wholes 2/3 on Wednesday. What is the total number of hour

GenaCL600 [577]

$1 \frac{2}{3} + 2 \frac{1}{3} + 2 \frac{2}{3} =$

$\frac{3*1+2}{3} + \frac{3*2+1}{3} + \frac{3*2+2}{3} =$

$\frac{3+2}{3} + \frac{6+1}{3} + \frac{6+2}{3} =$

$\frac{5}{3} + \frac{7}{3} + \frac{8}{3} =$

$= \frac{20}{3} h$

In hours:

20 |_3
(2)....6hs
x60'
------
120' |_3
(0)....40'

Answer:
6hs40min

or

 $\frac{20}{3} hs = \frac{20}{3} *60' = \frac{1200}{3} = 400'$

400' = 6*60' = 360' + 40' = 400' (True)
Until

6hs40min

5 0

3 years ago

How do I solve -x^2+7x-3=0

poizon [28]

-x^2+7x-3=0 multiply the expression by -1

x^2-7x+3=0 we will complete the square so subtract 3 from both sides

x^2-7x=-3 now halve the linear coefficient, -7/2, square it 49/4, and add that to both sides...

x^2-7x+49/4=49/4-3 now the left side is a perfect square...

(x-7/2)^2=(49-12)/3

(x-7/2)^2=37/3 take the square root of both sides...

x-7/2=±√(37/3) now add 7/2 to both sides...

x=7/2±√(37/3)

6 0

3 years ago

The price of books are $180 but he uses a 30% discount but there is a 4% tax what is the total price?

Anna [14]

well, so the book is 180 and is discounted by 30%, how much will that be?

$\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{30\% of 180}}{\left( \cfrac{30}{100} \right)180}\implies 54\qquad \qquad \underset{\textit{discounted price}}{\stackrel{180-54}{126}}$

so from that discounted price, a tax of 4%

$\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{4\% of 126}}{\left( \cfrac{4}{100} \right)126}\implies 5.04\qquad \qquad \underset{\textit{final price}}{\stackrel{126+5.04}{131.04}}$

5 0

3 years ago

PLEASE HELP!!!! Identify the slope that goes through the two given coordinate points (-3,0) (3,2)

Serjik [45]

when trying to find the slope of two given points use the formula m= y2 -y1/ x2-x1

so this is how you'd solve the equation:

y2= 2 y1= 0 x2= 3 x1= -3

the equation would be:

M=2-0/3+3

M= 2/6

M= 1/3

5 0

3 years ago

How is 7x➕721 factored

weeeeeb [17]

Answer:

7(x+103)

Step-by-step explanation:

you pull out a 7 from it

you take the 7 and put it outside the parenthesis

whatever you have left over that both 7x and 721 don't share you put in the parenthesis

7(x+103)

8 0

4 years ago