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m_a_m_a [10]
3 years ago
6

Estimate fraction sum or difference of 1/5+ 3/7

Mathematics
1 answer:
NISA [10]3 years ago
8 0
First, you need to find a common denominator 

1/5=7/35
3/7=15/35

7/35 + 15/35 = 22/35 or ≈ 0.63
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3. Factor the following trinomial. x^2 - 15x + 56.
makkiz [27]

Answer:

(x-7) (x-8)

Step-by-step explanation:

Break the expression into groups:

= x(x-7) -8(x-7)

Factor out x from:

x^2-7x     x(x-7)

Factor out -8 from -8x+56:

-8(x-7)

=x\left(x-7\right)-8\left(x-7\right)

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3 years ago
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STALIN [3.7K]

Answer:

Step-by-step explanation:

total increase=350+300=650

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Natalija [7]

Answer:

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Step-by-step explanation:

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3 years ago
What is 2 divided by 4/5
vova2212 [387]
The answer would be 10/4 but then you simplify it and get 5/2.
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3 0
3 years ago
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area of parallelogramis 30 cm^2. if the length of two adjacent sides are 6 cm and 10 cm respectively. find its diagonal​
GrogVix [38]

Answer:

the long diagonal d=15.49 ( rounded to the nearest hundredth)

the shortest d=√136-120(cos 30)=5.663 ( rounded to the nearest hundredth)

Step-by-step explanation:

Area=height * base

30=h*6

h=30/6=5 cm

height=asinФ

sinФ=5/10=1/2 (Ф=30)

alternate angle=180

180-30=150 degrees

diagonal²=a^2+b^2-2abcos150

d²=10²+6²-2(10)(6)(-√3/2)

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the long diagonal d=15.49 ( rounded to the nearest hundredth)

the shortest d=√136-120(cos30)=5.663

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3 years ago
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