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Hitman42 [59]
3 years ago
6

What is the first step when evaluating the expression (4 + 8 ÷ 2) x 5 – 1

Mathematics
2 answers:
Lubov Fominskaja [6]3 years ago
7 0

Answer:

B

Step-by-step explanation:

Follow the order of PEMDAS. So you gotta solve inside the prenthesis first following the order of pemdas and division comes first.

Parentheses

Exponent

Multiplication

Division

Addition

Subtraction

Yakvenalex [24]3 years ago
3 0

Answer:

B 8÷2

Step-by-step explanation:

because of pemdas.

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Help me to solve this.<br><br>x + 5 = 5
Ivenika [448]
The answer is x=0

Step by step explanation:
X+5=5
X+5-5=5-5
X=0.
7 0
3 years ago
Read 2 more answers
Can anyone help me with number 3 please
Gnoma [55]
Answer:


I think is (B)
4 0
3 years ago
Twice the first number is eleven more than the sum of the other two numbers. The sum of twice the first number and three times t
lidiya [134]
Well first you have to make variables for each number.
1st - x
2nd - y
3rd - z

first sentence says twice first number so 2x. is means equals so =. eleven more than sum of the other two numbers. sum of other two numbers is (y + z) and eleven more than that is (y + z) + 11. So so this sentence says:
2x = (y + z) + 11

second sentence says sum of twice the first and three times third. twice first is 2x and three times third is 3z. their sum would be (2x + 3z). It it says is one more than second number. So = (y + 1). So so this means:
(2x + 3z) = (y + 1)

third sentence says second number (y) is is equal to sum of first and third (x + z). so;
y = (x + z)

now for the work.

We we can easily solve for a by subtracting the first 2 equations. the way to subtract 2 equations is by subtracting one left side of equal sign from the other equations left side and then doing the same with the right side.

So we will subtract the 1st and second equations we made.
So so left sides would be
2x - (2x + 3z)
2x - 2x - 3z
-3z

right side would be:
y + z + 11 - (y + 1)
y + z + 11 - y - 1
z + 10

now put the sides with an equal sign
-3z = z + 10
-4z = 10
z = -2.5

now we can plug in z into the equations and subtract second and third equations. But but we will subtract opposite sides. So so left minus right and right mi is left after we plug in z:
(2x + 3 (-2.5)) - (x + (-2.5))
2x - 7.5 - x + 2.5
x - 5

other one would be
(y + 1) - y
1

So so put an equal sign and get:
x - 5 = 1
x = 6

now plug x and x into 3rd equation
y = x + z
y = 6 + (-2.5)
y = 3.5

now we have values. You can check answer by plugging values into other 2 equations
6 0
4 years ago
Help please i’m in the middle of a test
MA_775_DIABLO [31]

Answer:

None of your options

Step-by-step explanation:

(7 - 3i) + ( x - 2i)^2 -(4i^2 + x^2)\\\\(7 - 3i) + (x^2 - 4 - 4xi) - (-4 + x^2)\\\\7 - 3i + x^2 - 4 - 4xi + 4 - x^2\\\\7 -i(3+4x) - 4 + 4 - x^2 + x^2\\\\7 - (4x + 3)i

6 0
3 years ago
NEED HELP WILL GIVE BRAINLIEST
blagie [28]

Area of Circle having radius OP = 4 cm: 50.27 cm²

Area of Circle having radius AD = 1 cm: 3.14 cm²

Area of Circle having radius BC = 2 cm: 12.57 cm²

Area of the shaded region: 34.56 cm²

Circumference of the circle with center B: 12.57 cm

<h3>Area and Circumference of a Circle</h3>

Area = πr²

Circumference = 2πr, where r = radius.

Area of Circle having radius OP = 4 cm:

Area = π(4)² = 50.27 cm²

Area of Circle having radius AD = 1 cm:

Area = π(1)² = 3.14 cm²

Area of Circle having radius BC = 2 cm:

Area = π(2)² = 12.57 cm²

Area of the shaded region:

Area = 50.27 - (3.14 + 12.57)

Area = 34.56 cm²

Circumference of the circle with center B, having radius of 2 cm:

Circumference = 2π(2) = 12.57 cm

Learn more about area and circumference of circle on:

brainly.com/question/402655

4 0
3 years ago
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