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sukhopar [10]
3 years ago
13

Hi can anyone help me with exercise 3 and 4 please

Mathematics
1 answer:
Lapatulllka [165]3 years ago
7 0
Ex.3 all you have to do is add the numbers and if they add up to 180 its a triangle

ex.4 add up the two numbers then subtract it by 180 to get your 3rd number
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Which value of x makes the following equation true? <br> 6(x - 1) = -2x + 50
lakkis [162]

Answer:

x=7

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

6(x−1)=−2x+50

(6)(x)+(6)(−1)=−2x+50(Distribute)

6x+−6=−2x+50

6x−6=−2x+50

Step 2: Add 2x to both sides.

6x−6+2x=−2x+50+2x

8x−6=50

Step 3: Add 6 to both sides.

8x−6+6=50+6

8x=56

Step 4: Divide both sides by 8.

8x /8 = 56 /8

x=7

7 0
3 years ago
Calculate the percentage increase in cases from 2007 to 2009?​
k0ka [10]

Answer:

7.6%

Step-by-step explanation:

1141/15000 × 100 = 7.60667

but it's not an option...

the difference between 15000 and 16141 is 1141

3 0
3 years ago
The line is parallel to
tino4ka555 [31]

Recall that parallel lines have the same slope.

A line parallel to y= (-3/5)x + 8 would have the same equation EXCEPT for a different constant, C, replacing that '8.'

This new line passes thru (-5,-3).  In y= (-3/5)x + C, replace x with -5 and replace y with -3.  Then:

-3 = (-3/5)(-5) + C.  Find C:

-3 = 3 + C.  Thus, C = 6


Thus, the equation of the new line is y= -(3/5)x - 6

Check:  Let x = -5 and y = -3.  Is the above equation true?

-3 = (-3/5)(-5) - 6

-3 = 3 - 6, or -3 = -3.

8 0
3 years ago
Write 2x - x2 = 1 in standard form.<br> An equation in standard form is
Marat540 [252]

Answer:

X^2-2X+1=0

Step-by-step explanation:

given,2X-X^2=1

or,-(X^2-2X)=1

or,X^2-2X=-1

or,X^2-2X+1=0 ,which is the req.equation in standard form.

6 0
3 years ago
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How do I solve number 4 and 5?
topjm [15]

Answer:

Ummm...

Step-by-step explanation:

4 0
3 years ago
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