All categories

3 years ago

Pls help I will mark brainiest.

Mathematics

1 answer:

Lemur [1.5K]3 years ago

7 0

Answer: 90

Step-by-step explanation:

You might be interested in

Solve the inequality -d ≥ 0.5

Mariulka [41]

Answer:

d ≤ -0.5

Step-by-step explanation:

Multiply each term by -1

8 0

3 years ago

a seed company has a test plot in which it is testing the germination of a hybrid seed, They plant 50 rows of 40 seeds per row.

ziro4ka [17]

Answer:

Mean = $\sum x P(x) = 36.86$

Standard deviation = $\sum x^2P(X)=1360.9$

Step-by-step explanation:

x P(x) $x \times P(x)$ $x^2 \times P(x)$

33 0.02 0.66 21.78

34 0.06 2.04 69.36

35 0.1 3.5 122.5

36 0.2 7.2 259.2

37 0.24 8.88 328.56

38 0.26 9.88 375.44

39 0.1 3.9 152.1

40 0.02 0.8 32

1 36.86 1360.9

We are supposed to find mean and standard deviation

Mean = $\sum x P(x) = 36.86$

Standard deviation = $\sum x^2P(X)=1360.9$

7 0

3 years ago

Ratio numbers of boys and girls in a school is 5:7 . If their are 600 students total how many girls are their

Strike441 [17]

600/12 = 50 student are girls

Mark brainliest please

Hope this helps you

8 0

2 years ago

Ben is 20 years older than Daniel. Ben and Daniel first met two years ago. Three years ago, Ben was 3

fgiga [73]

Answer:

Step-by-step explanation:

3 years ago, the difference in ages was twice Daniel's age. So, Daniel was 20/2 = 10 years old at that time. Ben was 30.

Now, Ben is 33.

_____

If two numbers have a ratio of 3:1, their difference is (3-1) = 2 times the smaller number.

4 0

3 years ago

What is the first step in solving....<br> x - 1/3 = 1/3?

iVinArrow [24]

Answer:

Step 1: Simplify both sides of the equation.

Step-by-step explanation:

x+−13=13

3 0

3 years ago