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Aleonysh [2.5K]
3 years ago
11

Simplify the expression. [90 – (12 + 13)](15 ÷ 3)

Mathematics
2 answers:
slega [8]3 years ago
6 0
[90-(12+13)](15:3)= \\\\=(90-25)*5=\\\\= 65*5=\\\\=\boxed{325}
Eduardwww [97]3 years ago
4 0
First, solve the brackets. 13+12= 25. 15÷3= 5. So te equation is now: 90-25 × 5. Do 90-25 first, it equals 75. All that's left is 75×5, which is 375.
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Evaluate the given algebraic expression for x = 2 and y= 3.<br> -Зху<br> -6<br> -12<br> -18<br> -24
mrs_skeptik [129]

Answer:

-18

Step-by-step explanation:

-3xy,X=2 ,y=3

-3(2)(3)

-3(6)

=-18

4 0
2 years ago
A3-b3=(a-b)(a2+an+b2) 64x6-27
olga nikolaevna [1]
<span>a³-b³=(a-b)(a²+ab+b²)

64x⁶ - 27

64 = 4³, 
x⁶ = (x²)³
27 = 3³

</span>64x⁶ - 27 = 4³(x²)³ -3³ = (4x²)³ -3³.  Now, we can use a formula where a=4x², b=3

(4x²)³ -3³ = (4x² -3)((4x²)² +4x²*3 + 3²) =  (4x² -3)(16x⁴ +12x² + 9) 
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Answer: </span>64x⁶ - 27=  (4x² -3)(16x⁴ +12x² + 9) <span>

</span>
4 0
3 years ago
If y is 9 and x is 12, what additional information is necessary to show that triangle DUM is congruent to triangle MAP using the
Law Incorporation [45]
                         Δ DUM         Δ MAP

hypotenuse:      15                2y-3
short leg:             12                0.5x + 6

y = 9 ⇒ 2(9) - 3 = 18 - 3 = 15 Congruent with the hypotenuse of Δ DUM
x = 12 ⇒ 0.5(12) + 6 = 6 + 6 = 12 Congruent with the short leg of Δ DUM

SAS postulate states that two triangles are congruent if 2 of its sides and 1 angle have equal measure. Both the hypotenuse and short leg are equal in measure. Thus, both triangles are congruent with each other.
6 0
3 years ago
Is 8:12 equivalent to 10:15
kirill115 [55]
No it’s not because they don’t go into the same multiples
8 0
3 years ago
Read 2 more answers
What do u add to 5 4/7 to get 7
enot [183]

Answer:

10/7

Step-by-step explanation:

5 4/7=39/7

x+39/7=7

x=7-39/7

x=49/7-39/7

x=10/7

6 0
3 years ago
Read 2 more answers
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