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Free_Kalibri [48]
4 years ago
11

Write 7 1/5 - -3/5 as a mixed number. Help ASAP plzzz

Mathematics
1 answer:
maw [93]4 years ago
5 0
First add the fractions together because negative minus a negative equals positive. That equals: 7 4/5.
Then multiply 7*5+ 4. That equals:39.
Put that over the denominator and you answer is : 39/5.
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Use complete sentences to describe the use of an indirect proof.
likoan [24]
<span>instead of showing that the conclusion to be proved is true, you show that all of the alternatives are false. To do this, you must assume the negation of the statement to be proved. Then, deductive reasoning will lead to a contradiction: two statements that cannot both be true.</span>
5 0
4 years ago
Read 2 more answers
|x+4|=3x-5 solutions
KengaRu [80]

x + 4 = 3x - 5 \\ 2x = 9 \\ x =  \frac{2}{9}  \\  \\ x + 4 =  - (3x - 5) \\ x + 4 =  - 3x + 5 \\ 4x = 1 \\ x =  \frac{1}{4}
6 0
4 years ago
How could I solve y= 2x^2 + 16x - 66 <br><br> By using quadratic formula?
Slav-nsk [51]

Answer: the solutions are

x = 3 or x = - 11

Step-by-step explanation:

The given quadratic equation is expressed as

y = 2x² + 16x - 66 = 0

The equation is already in the standard form of ax² + bx + c

The general formula for solving quadratic equations is expressed as

x = [- b ± √(b² - 4ac)]/2a

From the equation given,

a = 2

b = 16

c = - 66

Therefore,

x = [- 16 ± √(16² - 4 × 2 × - 66)]/2 × 2

x = [- 16 ± √(256 + 528)]/4

x = [- 16 ± √784]/4

x = (- 16 + 28)/4 or x = (- 16 - 28)/4

x = 12/4 or x = - 44/4

x = 3 or x = - 11

4 0
3 years ago
Read 2 more answers
I will mark you brainiest if you answer this, also show work, please
aliya0001 [1]

Answer:

sorry no cheating

Step-by-step explanation:

4 0
3 years ago
Can someone offer help to this ratio question
AlekseyPX

Answer:

Cherry Pink has not been made (25:17\neq 4:3)

Step-by-step explanation:

Given that she already has 60litres of Rose Pink paint, we use the ratios to determine the volumes of red/white used:

Rose Pink=60l\\\\Red=\frac{1}{3}\times 60\\\\=20l\\\\White=\frac{2}{3}\times 60\\\\=40l

#Add these proportions to the additional red and white paints to determine if Cherry Pink has been made:

V_r=20l+80l\\\\=100l\\\\V_w=40l+28l\\\\=68l\\\\\therefore r:w=100l:68l     \ \ \ \ \  \ \ \ \  \ \# simplify\\\\r:w=25:17

We equate this proportion to the Cherry Pink proportion to verify if Cherry pink has been made:

25:17\neq 4:3

Hence, Cherry pink has not been made.

3 0
4 years ago
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