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2 years ago

If a student is chosen at random what is the probability they scored a 4 or 5

Mathematics

2 answers:

Alona [7]2 years ago

6 0

Answer:

Step-by-step explanation:

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DaniilM [7]2 years ago

5 0

Answer:

4= 40.0 5=10.0 chance

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Name two solutions for each inequality.

ahrayia [7]

So,

#1: $n \geq 3 \frac{11}{16} + 4 \frac{1}{2}$

Convert to like improper fractions.
$n \geq \frac{59}{16} + \frac{72}{16}$

Add.
$n \geq \frac{131}{16}\ or\ 8 \frac{3}{16}$

So, one solution could be $8 \frac{3}{16}$ .

Another solution could by 9. There is also 10, 11, 12, etc., and all numbers in between.

#2: $k \ \textless \ 6 \frac{2}{5} * 15$

Convert into improper fraction form.
$k \ \textless \ \frac{32}{5} * 15$

Multiply.
$\frac{(2^5)(3)(5)}{5}$

Cross-cancel, and we have our final result.
$(2^5)(3) = 96$
k < 96

96 is not a solution.

95 is a solution.

So is 94, 93, 92, etc, and all numbers in between.

6 0

3 years ago

(2x^2-5x+1)+(x^2-x-4)

maksim [4K]

Answer:

3x^2-6x -3

Step-by-step explanation:

(2x^2-5x+1)+(x^2-x-4)

we sum all coefficient according to the exponent of the variable

2x^2-5x+1+x^2-x-4 = 3x^2-6x -3

5 0

3 years ago

<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B5%20%2B%202%20%5Cdiv%20%20%5Csqrt%7B5%20-%202%7D%20%7D%20" id="TexFormula1" title

Artemon [7]

Answer:

so yea what was the answer again

Step-by-step explanation:

6 0

2 years ago

A cable on a crane measures 89 yards 2 feet. How much total cable would be on 14 identical cranes? Convert the answer to larger

babymother [125]

we know that

1 yard=3 feet

Multiply (89 yards 2 feet) by 14

(89 yards 2 feet)*14=89*14 yards 2*14 feet-------> 1,246 yards 28 feet

convert 28 feet to yards

28 ft=(28/3) yards=9.33 yards

9.33 yards=9 yards+0.33 yards

0.33 yards=1 foot

9.33 yards=9 yards+1 foot

substitute

1,246 yards 28 feet=1,246 yards +9 yards+1 foot----->1,255 yards + 1 foot

therefore

the answer is the option

C. 1,255 yards 1 foot

8 0

3 years ago

Read 2 more answers

What is the area of the trapezoid? 80m2 96m2 100m2 120 m2

never [62]

Answer:

100m^2

Step-by-step explanation:

area of trapezoid formula: $({b_{1} +b_{2})}{1/2h}$

b=base

base #1= 8

base #2= 12

h(height)= 10

(8+12)=20(sum of bases)

20/2=10(sum of bases over 2)

10*10=100(height * whats remaining of bases)

100m^2

hope this helps

5 0

3 years ago