3 years ago

A(x)= -5x+ 8. Find a (7)

Mathematics

2 answers:

Artemon [7]3 years ago

4 0

A(7)-32 that’s the answer

IRINA_888 [86]3 years ago

3 0

Answer:

a(7) = -32.

Step-by-step explanation:

if a(x) = -5x+8

then a(7) = -5(7) + 8.

-5(7) +8

-40+8

-32.

I hope this helps!

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Serga [27]

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Step-by-step explanation:

To calculate the total number of coins Kate have in her collection, we can use the rule of three:

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4 years ago

Find the perimeter of quadrilateral ABCD. Round to the nearest tenth.

guajiro [1.7K]

Answer:

Perimeter = 13.5 units

Step-by-step explanation:

Coordinates of A → (1, 2)

Coordinates of B → (2, 5)

Coordinates of C → (5, 7)

Coordinates of D → (4, 4)

Length of AB = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1}})^2}$

= $\sqrt{(2-1)^2+(5-2)^2}=\sqrt{10}$ units

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Perimeter of the quadrilateral = $2(\sqrt{10}+\sqrt{13})$

= 2(3.16 + 3.61)

= 13.54

≈ 13.5 units

Perimeter of the quadrilateral ABCD is 13.5 units

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3 years ago