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2 years ago

Which of the following should you do first when solving the equation 2x-7=3x-2(x+8)

Mathematics

2 answers:

lora16 [44]2 years ago

4 0

Answer:

You should start the question of by distibuting the group 2(x+8)

Step-by-step explanation:

This is the most imoortant step to start off with because of:

GEMDAS

group, exponent, multiply, divide, add and subtract

Georgia [21]2 years ago

3 0

Answer:

multiply 3x-2(x+8)

Step-by-step explanation:

PEMDAS

also you must simplify both sides to solve this problem and that's the first step to simplifying this side (the other one is simplified)

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Heidi has $4.55. She needs to buy bolts at the hardware store . Bolts cost$0.13 each. How many bolts can Heidi buy.

Rom4ik [11]

1 bolt = $0.13

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One of your friends is testing the effect of drinking coffee on the duration of cold symptoms. The common cold lasts, on average

Nonamiya [84]

Answer:

0.0930

Step-by-step explanation:

Given that one of your friends is testing the effect of drinking coffee on the duration of cold symptoms. The common cold lasts, on average, 6 days.

she tests a one-sided alternative about the population mean cold duration when drinking coffee, H0: μcoffee = 6 Ha: μcoffee < 6 She finds z = −1.68 with one-sided P-value P = 0.0465.

If hypotheses changed to two tailed as:

$H_0: \mu_{coffee} = \mu_{tea}\\H_a: \mu_{coffee}\neq \mu_{tea}$

(Two tailed test)

Since we have mean difference and std error the same, test statistic would remain the same.

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3 years ago

The perimeter of a rectangle is 60 centimeters. The base is 2 times the height. What are the dimensions of the rectangle?

tankabanditka [31]

Licenciado en Letrase (base 20 y altura 10 cm.

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3 years ago

Which statements are always true for a rectangle?

LekaFEV [45]

Answer:

True☆The diagonals are congruent.

Not always X All sides are congruent. (Only for rectangles that are also rhombus = a square!)

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True☆ The opposite sides are parallel. (Bc rectangles are parallelograms, part of the definition)

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2 years ago

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bearhunter [10]

Answer:

It's B.) They developed religious beliefs and practices.

Step-by-step explanation:

I just took the test

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