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3 years ago

Helpppppppppp it’s IXL

Mathematics

2 answers:

serious [3.7K]3 years ago

6 0

The answer is z to the power of -75

jarptica [38.1K]3 years ago

3 0

Answer:

Step-by-step explanation:

$z^0\times z^{-75}\\\\\mathrm{Apply\:exponent\:rule}:\\\quad \:a^b\cdot \:a^c=a^{b+c}\\\\z^0z^{-75}=z^{0-75}\\\\=z^{-75}$

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the digit at the tens place of a two—digit number is 4 times the digit at ones place if the sum of this number and the number fo

zysi [14]

Answer:

Step-by-step explanation:

The number 1 is in the ones place. 1x4=4, so 4 is in the tens place. If you reverse 41, you get 14. 41+14=55.

5 0

3 years ago

Alsion saves $29.26 each month. How many months will it take her to save enough money to buy a stereo for $339.12?

Darya [45]

Answer: 12 months (1 year)

We know that Alision gains $29.26 each month. She wants to buy a stereo for $339.12

You want to divide $339.12 with $29.26 to find the total months.

339.12 / 29.26 = 11.6

CHECK:

You want to round up, since she needs the money to buy a stereo. She's allowed to have more money.

29.26 * 12 = 351.12

It will take Alision 12 months (1 year) to buy her stereo.

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3 years ago

J is building a treehouse. He wants the treehouse to be 3 meters long. If j builds 50 centimeters. Each dayhow many days will it

Allushta [10]

50 cm = 1/2 m
3 m ÷ 1/2 m = 6

It will take him six days.

3 0

3 years ago

The average American man consumes 9.7 grams of sodium each day. Suppose that the sodium consumption of American men is normally

Phoenix [80]

Answer:

Step-by-step explanation:

b. p(10.5<x<11.2)= p(x<11.2)-p(x<10.5)

p(x<11.2)= (11.2-9.7)/1 = 1.5 = 0.9332

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3 0

2 years ago

Complete the work to find the dimensions of the rectangle. x(x – 3) = 10 x2 – 3x = 10 x2 – 3x – 10 = 10 – 10 (x + 2)(x – 5) = 0

Norma-Jean [14]

Answer:

$Length =5$

$Width = 2$

Step-by-step explanation:

Given

$Length =x$

$Width = x -3$

$Area = 10$

$x(x-3) =10$

See comment for missing part of the question

Required

Complete the expression to determine the dimension of a rectangle

We have:

$x(x-3) =10$

Open bracket

$x^2 -3x = 10$

Equate to 0

$x^2 -3x - 10 =0$

Expand

$x^2 + 2x - 5x - 10 = 0$

Factorize

$x(x + 2) - 5(x + 2) = 0$

Factor out x + 2

$(x - 5)(x + 2) = 0$

Solve for x

$x - 5 = 0$ or $x + 2 = 0$

$x = 5$ or $x = -2$

The value of x cannot be negative

So:

$x = 5$

Recall that:

$Length = x$

$Width = x - 3$

So:

$Length =5$

$Width = 2$ ---- i.e. 5 - 3

6 0

2 years ago