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3 years ago

Simplify. Use a horizontal format. (-2y2 - 4y - 11) + (4y2 - 4y)

Mathematics

1 answer:

dimulka [17.4K]3 years ago

6 0

-4y-11 that the answer hope it helps

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What is the value of x?

Anuta_ua [19.1K]

I don’t necessarily know if these two figures are supposed to be congruent or not but if they are here
Answer: X=23
Explanation: 23-4 is congruent to 19

7 0

3 years ago

Two years ago a man was six times as old as his daughter. In 18 years he will be twice as old as his daughter. Determine their p

Troyanec [42]

Answer:

Step-by-step explanation:

f- 2 = 6(d-2)

f - 2 = 6d - 12

f = 6d - 12 + 2

f = 6d - 10 .................................... eq 1

f + 18 = 2(d+18)

f + 18 = 2d + 36

f= 2d + 36 - 18

f = d + 18 .......................................... eq 2

eq1=eq2

6d - 10 = 2d + 18

6d - 2d = 18 + 10

4d = 28

d = 28/4

d = 7 yrs is the daughter's age

Take eq 1

f = 6(7) - 10

f = 42 - 10

f = 32 yrs is Father's age

3 0

3 years ago

Read 2 more answers

Kayla wants to find the width, AB, of a river. She walks along the edge of the river 65 ft and marks point C. Then she walks 25

AlladinOne [14]

Answer:

Part A) The triangles ABC and EDC are similar by AAA, because the three internal angles are equal in both triangles

Part B) The width of the river is about $39\ ft$

Step-by-step explanation:

we know that

If two triangles are similar, then the ratio of its corresponding sides is equal and its corresponding angles are congruent

Part A) we know that

In this problem , triangles ABC and CDE are similar by AAA, because its corresponding angles are congruent

m<DCE=m<ACB -----> by vertical angles

m<EDC=m<ABC -----> is a right angle

m<DEC=m<CAB -----> the sum of the internal angles must be equal to 180 degrees

Part B) we know that

The triangles ABC and EDC are similar -------> see Part A

therefore

$\frac{BC}{DC}=\frac{AB}{DE}$

substitute the values and solve for AB

$\frac{65}{25}=\frac{AB}{15}$

$AB=15*(\frac{65}{25})=39\ ft$

8 0

3 years ago

Two different sized triangles have a scale factor of 2:3. If the hypotenuse ( the longest side ) of the bigger triangle measures

OlgaM077 [116]

Answer:

16 in

Step-by-step explanation:

The 3 part of the ratio represents 24 inches.

Dividing by 3 gives the value of one part of the ratio.

24 in ÷ 3 = 8 in ← value of 1 part of the ratio, thus

2 parts = 2 × 8 in = 16 in ← hypotenuse of smaller triangle

6 0

4 years ago

Order the numbers from least to greatest -20 3/4 -14 3/4 -1/4 and -15 1/2

Bogdan [553]

Answer:

3/4 3/4 1/2 1/4 -14 -15 -20

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers