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noname [10]
3 years ago
10

Which of the following statements is false?

Mathematics
1 answer:
Whitepunk [10]3 years ago
6 0

Answer:

A.

Step-by-step explanation:

It's the first one. The angles are supplementary not complementary.

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Rita is making a beaded bracelet. She has a collection of 160 blue beads, 80 gray beads, and 240 pink beads. What is the estimat
a_sh-v [17]

Step-by-step explanation:

Given that Rita is making a beaded bracelet. She has a collection of 160 blue beads, 80 gray beads, and 240 pink beads. We are to calculate the probability that Rita will need to pick atleast 5 beads before she picks a grey bead from her collection.

Prob for drawing atleast 5 beads before she picks a grey bead from her collection

= 1-Prob for drawing atleast one grey beed in the first 5 draws.

(Because these two are complementary events)

no of grey beeds drawn in first 5 trials is

Bi=(5,1/6)

Prob for drawing atleast one grey beed in the first 5 draws.

=1-Prob of no grey

Hence required prob=P(X=0 in first 5 draws)

= 0.4018

6th beeds onwards can be grey also.

Nearest answer is c)0.45

7 0
3 years ago
3/6(r-7)=1 what Is value of r
sleet_krkn [62]
 3/6 (r-7) =1 The answer is r=7

3 0
3 years ago
9th grade math I don’t understand
harkovskaia [24]
Do you have to keep going or only just one more number it seems to be going by 2’s 4,6,8,10,12 but I’m a little confused since it says it’s 9th grade work
4 0
3 years ago
Norma and Albert both clean pools. Each charges a flat fee to clean a pool. Norma cleans 12 pools in 8 hours and earns $270. Alb
Novosadov [1.4K]

Answer:

1.5 per hour : 1.2 per hour

Step-by-step explanation:

The computation of the ratio is shown below:

For norma, the one pool would be

= 12  pools ÷ 8 hours

= 1.5 per hour

And for albert, the one pool would be

= 9 pools ÷ 7.5 hours

= 1.2 per hour

So the ratio between them is

1.5 per hour : 1.2 per hour

4 0
2 years ago
What are all values of x that satisfy 4x-1 < 6x+9
Lady bird [3.3K]

The values of x that makes the inequality true are all values less than -5

<h3>Inequality expressions</h3>

Given the inequalities below expressed as;

4x-1 < 6x+9

Collect the like terms

4x-6x < 9+1

-2x < 10

x <-10/2

<h3>x < -5</h3>

Hence the values of x that makes the inequality true are all values less than -5

Learn more on inequality here; brainly.com/question/24372553

#SPJ1

3 0
2 years ago
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