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3 years ago

What is the answer for the first one

Mathematics

2 answers:

Rasek [7]3 years ago

7 0

I think the answer's 45

Goryan [66]3 years ago

6 0

So what You do is 40 +5= 45 and 45-5= 40 so the answer is 45

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Barbara orders her groceries from a store that charges $15 plus the cost of her groceries to deliver her groceries to her home.

crimeas [40]

Answer:

The correct answer is Total Cost Payable = $Exp + $15, where $Exp is the total price of the groceries bought by Barbara

Step-by-step explanation:

Barbara orders her groceries. Let us consider that she orders groceries worth $Exp from a store.

Extra charges levied by the store for delivering the groceries to Barbara's house is $15.

Thus the total payable charge by Barbara for her groceries should include the total price of the groceries and the delivery charges levied by the store.

Thus the Total Cost Payable by Barbara is the sum of the total expenditure by her on the groceries and the delivery charge.

∴ The total cost payable = $Exp + $15.

6 0

3 years ago

Right △ABC has its right angle at C, BC=4 , and AC=8 .

PolarNik [594]

Answer:

Part A) $sin(A)=\frac{\sqrt{5}}{5}$

Part B) $tan(B)=2$

Part C) $sec(A)=\frac{\sqrt{5}}{2}$

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the length side AB (hypotenuse of the right triangle)

Applying the Pythagorean Theorem

$AB^2=BC^2+AC^2$

substitute the given values

$AB^2=4^2+8^2$

$AB^2=80$

$AB=\sqrt{80}\ units$

simplify

$AB=4\sqrt{5}\ units$

step 2

Find sin(A)

we know that

In the right triangle ABC

$sin(A)=\frac{BC}{AB}$ ----> by SOH (opposite side divided by the hypotenuse)

substitute the given values

$sin(A)=\frac{4}{4\sqrt{5}}=\frac{\sqrt{5}}{5}$

step 3

Find tan(B)

we know that

$tan(B)=\frac{AC}{BC}$ ----> by TOA (opposite side divided by adjacent side)

substitute the values

$tan(B)=\frac{8}{4}=2$

step 4

Find sec(A)

we know that

$sec(A)=\frac{1}{cos(A)}$

$cos(A)=\frac{AC}{AB}$ ----> by CAH

$sec(A)=\frac{AB}{AC}$

substitute the values

$sec(A)=\frac{4\sqrt{5}}{8}$

simplify

$sec(A)=\frac{\sqrt{5}}{2}$

3 0

4 years ago

What is the answer to 2 + (c + 0) = ?

ipn [44]

C=-2 because you would transfer to the other side making it negative. It can't be a negative so you divide -1 to 2. Making it -2.

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3 years ago

in the following census population density dataset, what are the first, second, third quartiles? 1,19,35,43,49,55,56,56,63,67,94

aniked [119]

It is do 67 my88
Ta 66

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3 years ago

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ahrayia [7]

Theme and tone work together in that B) theme is a poem's main idea, and tone is the writer's attitude toward that idea.

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3 years ago