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2 years ago

What is 2-3? I don't know math I really need help.

Mathematics

2 answers:

True [87]2 years ago

6 0

Negative one would be the answer

katrin [286]2 years ago

6 0

Negitave one. Is the answer

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Solve equation. 2x-5y=20

Novay_Z [31]

If you solve for x you get:
x=(5/2)y+10

If you solve for y you get:
y=(2/5)x−4

5 0

3 years ago

1. What is the greatest multiple of 7 that is less than 60?

hodyreva [135]

the first one is 56

3 0

2 years ago

Read 2 more answers

Events A1, A2 and A3 form a partiton of the sample space S with probabilities P(A1) = 0.3, P(A2) = 0.5, P(A3) = 0.2.

timurjin [86]

Answer:

Step-by-step explanation:

Given that events A1, A2 and A3 form a partiton of the sample space S with probabilities P(A1) = 0.3, P(A2) = 0.5, P(A3) = 0.2.

i.e. A1, A2, and A3 are mutually exclusive and exhaustive

E is an event such that

P(E|A1) = 0.1, P(E|A2) = 0.6, P(E|A3) = 0.8,

$P(E) = P(A_1E)+P(A_2E)+P(A_3E)\\= \Sigma P(E/A_1) P(A_1) \\= 0.1(0.3)+0.5(0.6)+0.8(0.2)\\= 0.03+0.3+0.16\\= 0.49$

$P(A_1/E) = P(A_1E)/P(E) = \frac{0.3(0.1)}{0.49} \\=0.061224$

$P(A_2/E) = P(A_2E)/P(E) = \frac{0.5)(0.6)}{0.49} \\=0.61224$

$P(A_3/E) = P(A_3E)/P(E) = \frac{0.2)(0.8)}{0.49} \\=0.3265$

4 0

3 years ago

I don’t know how to solve this

Romashka-Z-Leto [24]

Answer:

see explanation

Step-by-step explanation:

The perimeter is the length of all the sides in the figure.

The arc of the semi- circle is included in this.

length of arc = $\frac{1}{2}$ πd ← d is the diameter

here d = 8, hence

arc = $\frac{1}{2}$ π × 8 = 4π ← exact length

Perimeter = 10 + 8 + 10 + 4π ≈ 40.57 in ( nearest hundredth )

3 0

2 years ago

Molly recorded these temperatures one day: Morning temperature = −2°F Afternoon temperature = +1°F Night temperature = 0°F Which

madam [21]

Morning temperature = −2°F

Afternoon temperature = +1°F

Night temperature = 0°F

Answer

The morning temperature was 2 degrees below the night temperature

3 0

3 years ago