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3 years ago

9

a test consists of 20 multiple choice questions plus 10 true or false questions. Barry got 4 questions wrong. what percent of hi

s answers are correct.

1 answer:

Olin [163]3 years ago

7 0

Answer:

86.7%

Step-by-step explanation:

30-4=26

86.7%

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4 x -6<br><br> How many groups?<br><br> A. 4<br> B. -6

Andreyy89

Answer:

2(2x - 3)

the grouping is [ ]

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3 years ago

What is the value of x in this equation?<br> x - 1/2 = 3 1/6

Ludmilka [50]

Answer:

x= 3 2/3

Step-by-step explanation:

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3 years ago

Two triangles have altitudes of equal length. if the areas of these triangles have a ratio of 3:4 then the bases of the triangle

MatroZZZ [7]

Answer:
3/4
Area of the small triangle/Area of larger triangle=3/4

Area of the small triangle/Area of larger triangle=(1/2×base of small triangle×length)/(1/2×base of larger triangle×height)
3/4=(1/2×base of small triangle×height)/(1/2×base of larger triangle×height)
Since the length of the triangle are equal the base ratio of the two triangles is the same as area ratio.

5 0

3 years ago

F(x)=x²-3x-2 then f(-1) is given by

evablogger [386]

Answer:

f(-1) = 2

Step-by-step explanation:

To evaluate this function at x = -1, replace "x" in the equation with (-1) (you should use the parentheses as indicated here).

f(x)=x²-3x-2 becomes

f(-1)=(-1)² - 3(-1) -2, or

f(-1) = 1 + 3 - 2, or

f(-1) = 2

8 0

3 years ago

Megan buys a 2-quart bottle of juice for $2.56. What is the unit rate of the cost of the juice?

Mila [183]

Answer: $0.04 per fluid ounce.

Step-by-step explanation:

Let's conver 2 quarts to ounces, as following:

$(2\ quarts)(\frac{32\ ounces}{1\ quarts})=64\ ounces$

You know that she buys a 2-quart bottle of juice (or 64 ounces) for $2.56, therefore, to find the unit rate of the cost of the juice you must divide $2.56 by 64 ounces.

Then, you obtain the following result:

$=\frac{2.56dollars}{64\ ounces}=0.04\frac{dollars}{ounces}$

( $0.04 per fluid ounce)

8 0

4 years ago