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gavmur [86]
2 years ago
9

Pls helpp 3/4 + 4/5 - 7/10 =?

Mathematics
2 answers:
Margarita [4]2 years ago
5 0

Answer:

3/4=0.75

4/5=0.8

7/10=0.7

0.75+0.8=1.55

1.55-0.7=0.85

Step-by-step explanation:

drek231 [11]2 years ago
5 0

Answer:

17/20 or 0.85

Step-by-step explanation:

3/4+4/5-7/10=x

convert to have common denominators

15/20+16/20-14/20=x

17/20=x

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The area of a particular rectangle is 72. If the length of the rectangle is twice
soldier1979 [14.2K]

Answer:

6

Step-by-step explanation:

Suppose the width is "a".  Then the length is 2a.

2(a²) =72 Divide both sides by 2

    a²= 36

    a=6

   

4 0
3 years ago
√9a^2 + √49b - a + √b<br><br><br> a. 2b + 8 √a<br><br> b. 2a - 8 √b<br><br> c. 2a + 8 √b
Firdavs [7]
The correct answer:
______________________________________________________
Explanation:
______________________________________________________
Assuming you mean:

" √(9a²)  +  (√49b)  −  a  +  √b " ;

Simplify the expression:
_________________________________________________________

Note that:  " √(9a²) = 3a " ;

                   "√(49b) = 7√b " ;   

And we write the expression

   →  " 3a  +  7√b  −  a  + √b " ; 

Combine the "like terms:

   " + 3a − a  =  2a " ;

   " +  7√b  +  1√b   =  8√b " ; 

Rewrite:  
________________________________________________________
    " 2a  +  8√b " ;  which is:  Answer choice:  [C]:  " 2a  +  8√b " .
________________________________________________________
8 0
2 years ago
What is the range of the function pictured below?
zhenek [66]

Answer:

0 ≤y ≤ 60

Step-by-step explanation:

The range is  values the y can take

y goes from 0 to 60

10 ≤y ≤ 60

3 0
3 years ago
Find the value of c that makes each trinomial a perfect square.<br> x^2-13x+c
vova2212 [387]

Answer:

169/4

Step-by-step explanation:

x² - 13x + c

x² -2(x)(13/2) +(13/2)²

(13/2)² = 169/4 or 42 ¼

8 0
3 years ago
Jordan changed the dimensions of a rectangular picture measuring 20 cm wide by 25 cm high by a scale factor of 5/2.
iVinArrow [24]

Answer:

I believe it's an enlargement, because 5/2 is more than one whole.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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