PLS HELPPPPPPPPP PLSSSSSSS

(1) In an investigation of toxins produced by molds that infect corn crops, a biochemist prepares extracts of the mold culture with organic solvents and then measures the amount of the toxic substance per gram of solution. From 6 preparations of the mold culture, the following measurements of the toxic substance (in milligrams) are obtained:1.4, 1.5, 1.8, 1.9, 2.5, 2.2Find a 99% confidence interval for the mean weight (in milligrams) of toxic substance per gram of mold culture in the sampled population.(2) Which of the following statements is true regarding part (a)?(A) The population mean must be inside the confidence interval. (B) The population does not need to be normal. (C) The population must be normal. (D) The population standard deviation ? must be known. (E) The population must follow a t-distribution.

Jayden used the multiplication table below to determine that 8:14 is equivalent to 24:42.

Which statement explains why Jayden’s reasoning is correct?

a. The ratio 8:14 is 4:7 times 2, and the ratio 24:42 is 4:7 times 6.
b. The terms 8 and 14 are multiples of 2, and the terms 24 and 42 are also multiples of 2 when the table is extended.
c. The term 24 is a multiple of the term 8, and the terms 14 and 42 are multiples of 7.
d. The ratio 8:14 is equivalent to 2:7, and the ratio 24:42 is also equivalent to 2:

Write the following statement as a mathematical expression.

Let x be a number.



The quotient of two and a number, subtracted from seventeen

The heights of men in a survey are distributed normally about the mean.

Suppose the survey included data on 100 men. About how many would you expect to be 69−71 inches tall?

What is the area of a triangle whose vertices are D(3, 3), E(3, −1), and F(−2, −5)?

Which equation does this graph represent?

HELP PLS ITS DUE IN 30 MINUTESSSS What is the equation of the line that crosses the y-axis at 2 and has a unit rate of 8/2?


Group of answer choices


y = 4x + 2


y = 2x + 2


y = 2x + 4


y = 4x -2

I WILL GIVE YOU 30 POINTS!! ASAP PLZ

You use a line best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is -0.833. How confident can you be that your predicted value will be reasonably close to the actual value? Why or why not?

5/8 m
Calculate the perimeter of a square with side length 5/8m
Give your answer as a mixed number.

SOMEONE PLEASE ANSER THIS QUESTION ASAP!!!

Real easy probability problem please help!

In a survey, 46 people, which was 20% of those surveyed chose red as their favorite color how many people were surveyed

help me plz this is my first doing slopes

What value of x solves the equation? -(-5x + 3) = 17 What value of x solves the equati​

if u know that y=30 then what is y=4x-2

The cost of tickets to a local amusement park are $45 per adult and $25 per child. What would be the total cost for 5 adults and 8 children?

What is the value of the expression when a = -2, b = 3, and c = -6?
ab + 20
be
-1
1

99x-99y=99 how to graph it

WILL GIVE BRAINLIEST if you show your work

Frank’s grandfather collected animal fossils. Over his lifetime his grandfather had collected three billion, two hundred ninety-seven million, fourteen fossils. His grandmother also collected things, but she collected arrowheads. She had collected nine hundred seventeen million, three hundred seventeen thousand, eight hundred ninety-two arrowheads. What was the difference in the amounts they collected?

Frank’s grandfather collected
more items.

Pls help my brain hurt

name of the each shape below

find the slope and y-intercept of the line in the graph. Express the answers as simplified fractions, if necessary.

The expression 2y + 2.6 is equal to ? for y = 1.4

100 POINTS!!!!!
5x + 1 over 2 y2

What is the value of the expression above when x = 3 and y = 2? You must show all work and calculations to receive full credit.

Michael spends 3 hours cleaning his house. He spends equal amounts of time cleaning each room. If he spends 1/2 hour cleaning each room, how many rooms does his house have

0.00007547 in standard form

A linear function models the height of a burning candle. Candle A comes out of the mold at 217 ​mm, and is expected to be at 193 mm after 3 hours of burning. The model for Candle B is h=260-5t​, where h is the height in millimeters and t is the time in hours. What are the initial values for each​ candle? What do the initial values for each candle tell​ you?

Jamal planted 53 fewer flowers than Heidi. Write an expression to show how many flowers Heidi planted.

What is the sign of the product of (-1/2) (-2/3) (-1/5) (-8/15) (-3/8)