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Arada [10]
3 years ago
8

Help my friends y'all really are awesome

Mathematics
1 answer:
anyanavicka [17]3 years ago
5 0

Answer:

81

Step-by-step explanation:

u multiply 9 x 9 not 9x2

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Help me plz thank you
nevsk [136]

Answer:

1) Distance=Speed*time

90=(x+1)*(x)+(2x+5)(x-1)

90=x^2+x+2x^2-2x+5x-5

3x^2+4x-95=0

2) 3x^2+4x-95=0. Using quadratic formula, we get

x=(-4±sqrt(16-4*3*(-95)<u>)</u>)/6, x=5 or - 19/5 but since x also represents time, it can't be negative.

3) Total time take she took for the journey is x+x-1=2x-1=2*5-1=9 hours

4 0
3 years ago
Use the Distributive Property to find the Product 4 and 2/5 × 10
arlik [135]
Distributive Property ( A number, n, is multiplied to the expression in parentheses)

4( \frac{2}{5}  \times 10) =  \\ 4( \frac{20}{5} ) =  \\ 4(4) = 16
5 0
3 years ago
What’s the vertex of this equation?
statuscvo [17]

f (x) = a(x - h)^2 + k, where (h, k) is the vertex of the parabola.

Do you see the h and k in your equation?

-h = -(-2) = 2

We see that k = -4.

Our vertex is (2, -4).

3 0
3 years ago
Efectuati ridicarea la putere
KATRIN_1 [288]
What power? ce <span>putere?</span>
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3 years ago
2/5 of 1 meter=____cm<br> Plz help thx
Crazy boy [7]

Answer:

40 cm

Explanation:

2/5 = 0.4

1 meter = 100 cm

so,

100 x 0.4= 40 cm

4 0
3 years ago
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