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Romashka [77]
1 year ago
14

Hellen has a bag with 14 red block, 9 blue blocks, 10 purple blocks, 25 green blocks, 12

Mathematics
1 answer:
stiks02 [169]1 year ago
4 0

Answer:

0.10

Step-by-step explanation:

14 red block

9 blue blocks

10 purple blocks

25 green blocks

12 yellow blocks

18 orange blocks

----------------------------

88 total number of blocks

9 blue blocks

p(blue) = 9/88 = 0.10

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Tristan is working two summer jobs, making $7 per hour babysitting and $19 per hour lifeguarding. Tristan must earn at least $21
rodikova [14]

Answer: 7bb +19 ll ≥210

Step-by-step explanation:

Hi, to answer this question we have to write an inequality:

The product of the number of hours he works babysitting (bb) and the amount he earns per hour (7); plus The product of the number of hours he works lifeguarding (ll) and the amount he earns per hour 19; must be higher or equal to the amount he must earn this week (210)

Mathematically speaking:

7 bb + 19 ll ≥210

6 0
3 years ago
The goal of a toy drive is to donate more than 1000 toys. The toy drive already has collected 300 toys. How many more toys does
Brilliant_brown [7]

Answer:

Let t be the number of toys.

Since, the toy drive already has collected 300 toys

⇒ t+ 300

Also, it is given that the goal of a toy drive is to donate more than 1000 toys.

We get an inequality:

⇒t + 300 > 1000

Solve an inequality:  

t + 300 > 1000

Subtract 300 from both sides we get

t + 300 -300 > 1000-300

Simplify:

t > 700

Therefore, more than 700 toys does the toy drive need to meet its goal.

An inequality is; t + 300 > 1000 ;  t > 700




7 0
3 years ago
6+4×5-5² help please I keep on getting 16
Whitepunk [10]

Answer: 1

Step-by-step explanation:

6+4×5-5²

=6+20-25

=1

3 0
2 years ago
Read 2 more answers
A wildlife audit was recently conducted in Port Augusta, the results of which were as follows: Amphibians Insects Fish Reptiles
r-ruslan [8.4K]

Answer:

The relative frequency of mammals in the survey is 30%.

Step-by-step explanation:

Relative frequency is the ratio of the occurrence of a singular event and the total number of outcome

Amphibians  Insects  Fish  Reptiles  Birds  Mammals

12                 30          9          25        22        42

Relative frequency = = \frac{\text{ (number of trials that are successful)}}{\text{(total number of trials)}}

Total number of wildlife animals  = 12+ 30 +9 +25+22+42 = 140

Now the relative frequency of mammals in the survey = \frac{\text{total number of mammals}}{\text{ Total number of animals}}

the relative frequency of mammals in the survey =\frac{42}{140} = 0.3

Converting into percentage , we get

=0.3 \times 100

= 30 %

5 0
3 years ago
Which of the expressions below is equivalent to the expression: 42 + 32 – 13 × 2 + 38? a. 42 + 32 – (26 + 38) b. 42 + 32 – 13 ×
Anika [276]
Using PEMDAS, 42 + 32 - 13 * 2 + 38 can be simplified as,

C. 42 + 32 + 12 = 86

You can check this by inserting the given expression (42 + 32 - 13 * 2 + 38) into a calculator, which should also give you the same answer of 86.
5 0
3 years ago
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