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2 years ago

9

Help me pls i need this answered

2 answers:

avanturin [10]2 years ago

7 0

Answer:

$-\frac{4}{3}$

Step-by-step explanation:

$-3 \frac{3}{5}$ ÷ $2 \frac{7}{10}$

Convert both mixed numbers to an improper fraction. This can be done by multiplying the denominator by the "number" part of the mixed number, then adding the result to the numerator.

$- \frac{18}{5}$ ÷ $\frac{27}{10}$

Now divide the fractions, to divide the fractions, one will find the reciprocal of the recond fractions, and then multiply it by the first fractions. Remember, the reciprocal of a fraction is when one switched the numerator and denominator of a fraction.

$-\frac{18}{5} * \frac{10}{27}$

$= -\frac{180}{135}$

Simplify;

= $-\frac{4}{3}$

aksik [14]2 years ago

5 0

Exact form - -4/3
decimal form - -1.3 repeating
mixed number - -1 1/3

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Distance between A (2, -1) and (2,a) is 4 units. Find the value of a where a is positive.

kolezko [41]

Answer:

a = 3

Step-by-step explanation:

Calculate the distance d using the distance formula and equate to 4

d = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }$

with (x₁, y₁ ) = (2, - 1) and (x₂, y₂ ) = (2, a)

d = $\sqrt{(2-2)^2+(a+1)^2}$ = $\sqrt{0+(a+1)^2}$ = $\sqrt{(a+1)^2}$ = a + 1 then

a + 1 = 4 ( subtract 1 from both sides )

a = 3

3 0

2 years ago

) The manager of a local Gap store estimates that on average the probability of a customer entering the store and will purchase

xeze [42]

Answer: 1. 0.0256

2. 0.4096

Step-by-step explanation:

Binomial probability formula , to find the probability of getting x successes:

$P(x)=^nC_xp^x(1-p)^{n-x}$ , where n= Total number of trials

p= Probability of getting success in each trial.

Let x be the number of customers will make purchase.

As per given , we have

p= 0.20

n= 4

1. The probability that 3 of the next 4 customers will make a purchase will be:-

$P(x=3)=^4C_3(0.20)^3(1-0.20)^{4-3}$

$P(x=3)=(4)(0.20)^3(0.80)^{1}\ \ [\because\ ^nC_{n-1}=n]$

$P(x=3)=(4)(0.008)(0.80)=0.0256$

Hence, the probability that 3 of the next 4 customers will make a purchase = 0.0256

2. The probability that none of the next 4 customers will make a purchase will be :

$P(x=0)=^4C_0(0.20)^0(1-0.20)^{4-0}$

$P(x=0)=(1)(0.80)^{4}\ \ [\because\ ^nC_{0}=1]$

$P(x=0)=0.4096$

Hence, the probability that none of the next 4 customers will make a purchase= 0.4096

5 0

2 years ago

Can any one help me solve this ?

Neko [114]

The answer to your question is 12b^2
Because 3-12 is -9 pal :)

3 0

2 years ago

How to solve this question ?

Ratling [72]

Step-by-step explanation:

eight times the difference of 2 and a number would be 8 × (2-x)

3 0

2 years ago

Find the slope of the line that passes through the points (4, 3) and<br> (2, 7).

timofeeve [1]

Answer:

-2

Step-by-step explanation:

7-3/2-4=-2

use slope formula

5 0

2 years ago