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serg [7]
3 years ago
7

Question 5

Mathematics
1 answer:
kumpel [21]3 years ago
8 0

Answer:

Congruent

Explanation:

The reflection never changes the angle measures or side lengths of the figure.

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After 5 tests Dara's average score was 88 what score must she average on the next two tests to have a seven-test average of 90?
Tomtit [17]

After 5 tests, her average was 88. To have a seven-test average of 90, the total must be:

90 \times 7 = 630

Her average after 5 tests was 88. Her total score on the 5 tests is:

88 \times 5 = 440

Subtract:

630-440 = 190

Find the average by dividing by 2:

190 \div 2 = 95

Her average must be 95

3 0
2 years ago
Expand or simplify <br>3c(5+c) -2(3c-7)​
Luden [163]
3c(5+c) -2(3c-7)
15c+3c^2-6c+14
9c+3c^2+14
7 0
3 years ago
Read 2 more answers
Which of the following describes the translation of the graph of y = x2 to obtain the graph of y = -x2 - 3?
Ray Of Light [21]

Answer:

reflections across the x axis and a shift down 3 units

Step-by-step explanation:

y = x^2

The negative sign means  it is a reflection across the x axis y = −f(x)

y = -x^2

The subtraction of 3 means we are shifting down 3 units

y = -x^2 -3

5 0
3 years ago
Calculate the area of the following figure. All measurements are in centimetres. Give answer to correct two decimal places.
kykrilka [37]

Answer:

Step-by-step explanation:

The shape above is a composite shape having two different shapes like rectangle and semi- circle

Area of rectangle=Length × Breadth

Area of semi circle=1/2πr^2

To find the area of the rectangle naw

Length of the rectangle=6.6

Width of the rectangle=4

A=6.6×4

A=26cm^2

Area of semi-circle=1/2

Diameter of the shape =4cm

Radius=2cm

A=1/2×3.14×2cm x2cm

A=6.28cm^2

Area of the shape=26+6.28cm^2

Area=32.28 to 2 dp

3 0
2 years ago
a flower garden is in the shape of an equilateral triangle. each side measures 15 3/8 ft. what is the gardens perimeter
lisov135 [29]

Answer:

16.125 is the perimeter

Step-by-step explanation:

Multiply 15.375 × 3 because a triangle has three sides and is equilateral.

15.375 × 3 = 16.125

Have a great day!

7 0
2 years ago
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