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wlad13 [49]
4 years ago
5

What's the equivalent expression of this equation after combining like terms? −2x−x+8

Mathematics
2 answers:
krok68 [10]4 years ago
8 0

Answer:

i believe this is right                  2 x^2+16x

Step-by-step explanation:

Aleksandr-060686 [28]4 years ago
7 0

Answer:

-3x+8

Step-by-step explanation:

−2x−x+8

Combine like terms

-3x+8

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I need extreme help with this.<br><br>​
irga5000 [103]

The first way i.e. the 4(x)

Step-by-step explanation:

Its because there's no gap in between and the letter is surrounded by brackets on both sides so it cant be divided and it's the only letter . There's no rule in mathematics that allows you to multiply a single number surrounded by brackets at both sides.

8 0
3 years ago
Read 2 more answers
Julian’s friend James also has a tank in the shape of a triangular prism. The dimensions of James’ tank are each exactly 2 3/4 t
malfutka [58]

The approximate area of the triangular base of James’ tank is 3025 in²

To find the approximate area of the triangular base of James' tank, we need to know what scale is.

<h3>What is scale?</h3>

A scale is the ratio of two dimension. It is given by scale = New dimension/old dimension

Given that the dimensions of James’ tank are each exactly 2 3/4 times the dimensions of Julian’s tank.

The scale of the area of James' tank to the area of triangular base of Julian's tank is S = (2³/₄)²

= (11/4)²

= 121/16

Let

  • A = area of triangular base of James' tank,
  • A' = area of triangular base of Julian's tank = 400 in²

So, scale, S = A/A'

<h3>The approximate area of the triangular base of James’ tank</h3>

So, making A subject of the formula, we have

A = SA'

A = 121/16 × 400 in²

A = 121 × 25 in²

A = 3025 in²

So, the approximate area of the triangular base of James’ tank is 3025 in²

Learn more about area of triangle here:

brainly.com/question/27436493

#SPJ1

5 0
3 years ago
Exercise<br>Change 40days to weeks and days​
AlladinOne [14]
5 weeks and 5 days.

Explanation: 40\7 equals 5.714... 5*7=35 40-35=5
8 0
3 years ago
2xsquared +3x-20=0 solve using quadratic formula
Ghella [55]

Answer:

\frac{5}{2} ; -4

Step-by-step explanation:

2x² + 3x - 20 = 0

a = 2 ; b = 3 ; c = -20

[ -b ± √(b² - 4ac) ] /2a = [-3±√(3²-4*2*-20]/2*2

                                 = [-3±√(9+160)]/4

                                = [-3±√169 ]/4

                                = [-3± 13]/4

                                = \frac{-3+13}{4}   ;\frac{-3-13}{4}\\\\=\frac{10}{4}      ; \frac{-16}{4}\\\\=\frac{5}{2} , -4

6 0
4 years ago
Read 2 more answers
MARKING BEST ANSWER BRAINLIEST!!!!!!!!!!!!!!!!!!!!What is the median of this group of numbers?
butalik [34]

Answer:

There are 7 number so what you want to do is separate them into groups and the median will be the number in the middle which is 40 so 40 is the median

Step-by-step explanation:

hope this helps

8 0
3 years ago
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