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Anna71 [15]
3 years ago
11

Can someone please help me with these 3 questions I’ll mark brainliest

Mathematics
1 answer:
pshichka [43]3 years ago
7 0

Answer:

2/ triple need video for the third answer

Step-by-step explanation:

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A bag contains five red marbles, four blue marbles, and four yellow marbles. You randomly pick a marble. What is the probability
Vikentia [17]

n(s)= 5+4+4=13

n(e)= red + blue

=5+4

=9

so, p(e) = n(e)/n(s)

p(e)= 9/13

=0.69

it's your answer

it will help.

7 0
3 years ago
In this question , all lengths are in centimetres. AB= 3x-4,AC=2x+12,BC=7x-2.given AB:AC=1:2 show that AC:BC=2:3
Lelu [443]

Answer:

AX : XB as AB : AC

AX = 5

XB = 4

AC = 6

AB = x

Step-by-step explanation:

5 : 4 as to x : 6

ratios can also be written as fractions...

5/4 = x/6 ..now we have a proportion...so we cross multiply

(4)(x) = (5)(6)

4x = 30

x = 30/4

x = 15/2 <==== AB = 15/2

4 0
3 years ago
Read 2 more answers
Please help in math!! Solution needed
Marysya12 [62]
This is the same as any math problem you may have solved before.

First, start by isolating the x on one side. I will choose to keep the coefficient positive, so I will add x to both sides.

6>2x+2

Subtract 2

4>2x

Divide by 2

2>x

Or

x<2
5 0
3 years ago
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Mateo has 60 wooden tiles in the shape of diamonds as shown below. He plans to glue these tiles side by side onto a tabletop.
Rudik [331]

Answer: 1620

Step-by-step explanation: This is for a parallelogram you would multiple 6 base x's 4.5 height= 27 area for each diamond.

He's using 60 tiles. Multiple the area of 1 tile which is 27 by 60 wooden tiles to find the area of the parallelogram. 27 multipled by 60 tiles= 1620 inches squared

8 0
3 years ago
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You your driving from Austin to Houston with a constant speed of 120km/hr (75 mph). After 1.5 hr you stop for 0.5 hr. Then you c
Aneli [31]

Answer:

69

Step-by-step explanation:

i'm just hear to get points sorry

7 0
3 years ago
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