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Leno4ka [110]
3 years ago
7

#20 I’m not sure how to solve it. And the answer should be able to grid in like on the SAT

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
4 0

Answer:

1

Step-by-step explanation:

i (a + bi) = 1

ai + b(-1) = 1

ai − b = 1

Match the coefficients.

ai = 0

-b = 1

Therefore, a = 0 and b = -1.

So a − b = 0 − (-1) = 1.

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Se arrastra un bloque de 18 kg a través de una superficie con una fuerza de 300 N en donde el coeficiente de fricción de dicha s
ozzi

Answer:

10.9\ \text{m/s}^2

Step-by-step explanation:

m = Masa del bloque = 18 kg

F = Fuerza en el bloque = 300 N

\mu = Coeficiente de fricción = 0.6

El equilibrio de fuerzas del sistema viene dado por

F-f=ma\\\Rightarrow 300-0.6\times 18\times 9.81=18a\\\Rightarrow a=\dfrac{300-0.6\times 18\times 9.81}{18}\\\Rightarrow a=10.9\ \text{m/s}^2

La aceleración del bloque es 10.9\ \text{m/s}^2.

8 0
3 years ago
A rectangle has an area of 96 cm2 The length of the rectangle is 4 cm longer than the width. Work out the length and width of th
Svetach [21]
Area of a rectangle: 2(L+W)
length: 4+W

Area: 2(4+W) + 2W = 96
8+2W+2W = 96
8+4W = 96
4W = 88
W= 22cm

Calculate for length: 2L + 2(22) = 96
2L + 44 = 96
2L = 52
L = 26cm

• The length is 26cm and width is 22 cm.
3 0
4 years ago
How do I find the side lengths for this triangle if only one side and ond angle is given? Plz help
alexandr1967 [171]
The two unknown sides are equal to each other so then the two unknown angles are also equal.

A triangle angles add up to 180
36 + 2x = 180
2x = 180 - 36
2x = 144
unknown angles x = 72°

draw line down center of triangle to make two right triangles with side 22/2 = 11. SOH CAH TOA

cos(72) = 11/H
H = 11/cos(72)
H = 35.6

perimeter = 22 + 2(35.6)
perimeter = 93.2 cm

answer E .



8 0
4 years ago
A recipe uses 5 cups of milk to make 25 servings. If the same amount of milk is used
Papessa [141]

Answer:

https://youtu.be/ssE-HVO4SY4

5 0
2 years ago
Use formula to find the correct answer:
Eduardwww [97]
Answer: Volume, 480in^3

Step by step solution:

Volume=b*l*w
V=10in * 6in * 8in
V=480in^3
4 0
3 years ago
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