MATHEMATICS MIDDLE SCHOOL

The table shows Janisa’s scores in an archery tournament qualifying event.A 1-column table with 6 rows. Column 1 is labeled Janisa's Scores with entries 10, 10, 8, 8, 3, question mark.

Janisa needs a mean score of 8 to qualify for the archery tournament. How many points does she need on her last arrow to qualify for the tournament?

Janisa needs
total points to have a mean score of 8.
Janisa has
points so far.
Janisa needs to score
points on her last arrow to qualify for the tournament.

Answers

Answer 1
Answer:

Answer:

this should help

Step-by-step explanation:
Answer 2
Answer:

Answer: Janisa needs to get 10 points on the last arrow to qualify for the tournament.

Step-by-step explanation:

10 + 10 + 8 + 8 + 3 + 10 = 49

49/6 = 8.16666667

round it to nearest 1 and its 8

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The square abcd has side length 10cm. E is the midpoint of BC. Work out the length of DE. Answer to 1 decimal place.

Answers


-- DEC is a right triangle.

-- DC is one side of the square  =  10 cm
-- EC is half the side of the square = 5 cm
-- DE is the hypotenuse = square root of (5² + 10²)  =  √(125 cm²) .

-- Truncated to one decimal place, that's  11.1 cm. 

-- Rounded to one decimal place, it's 11.2 cm.
Think of it as a triangle. E is the midpoint of BC, so EC is 5cm. Then CD is 10cm. Pythagoras it, so 5^2 + 10^2 = DE^2. Rt(125) = 11.2 to 1 decimal place. That's the answer

Tina described four triangles as shown below: Triangle A: All sides have length 12 cm.
Triangle B: Two sides have length 10 cm, and the included angle measures 60°. Triangle C: Base has length 15 cm, and base angles measure 40°.
Triangle D: All angles measure 60°.

Which triangle is not a unique triangle? Triangle A Triangle B Triangle C Triangle D

Answers

Answer:

Triangle D is not a unique triangle.

Step-by-step explanation:

Triangle A:  All sides have length 12 cm.

such a triangle will be a unique triangle and it will be an equilateral triangle.

Triangle B: Two sides have length 10 cm, and the included angle measures 60°.

Such a triangle will also be unique because with the help of the given angle measure and and the angles opposite to equal sides are equal we can find the measure of those two angles.

and hence we can construct a triangle with the help of these information.

Triangle C:  Base has length 15 cm, and base angles measure 40°.

Such a triangle will also be unique as a unique triangle could be constructed with the help of these information.

Triangle D: All angles measure 60°.

Such a triangle will be an equilateral triangle but we can't say it will be unique as we can construct infinite number of triangles with different side lengths.

Hence such a triangle is not unique.

What is greater 0.086 or 86%

Answers

86% because 0.086 equates ti 8.6%
86% is greater because 0.086 isn't a whole number while 86% is.

Employees at electronic stores make 2% of their monthly sales in commission. If Andy sells $3,178 last month what is his commission?

Answers

100% = $3,178
1% = $31.78
2 % = $63.56

Therefore on last moths sales commission, Andy earned $63.56.

Please help!! I've been on this question for quite a bit and I have an idea of what the answer is, but I'm not positive it's right.

Answers

your answer is 3/5b + 79.50 = 132.50.
3/5b +79.50 = what - like an algebra question solve for b.
3/5b +79.50 = -79.50
         - 79.50
3/5b = 79.50
5/3 x 3/5 b = 79.50 x 5/3
b - 79.50/1 x 5/3 = 397.50/3 
b = 132.50

Slope passing through the points of (3,-3) and (2,-5)

Answers

Answer:

Use the slope formula (y2-y1)÷(x2-x1)

Step-by-step explanation:

(-5-(-3))÷2-3

= (-2.5,-1)
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