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g100num [7]
3 years ago
10

I need help asap! Dana is trying to walk 12 miles every week. She walked 3 miles on Monday and 5 miles on Wednesday. How many mo

re miles does she need to walk this week in order to reach her goal?
Write an equation and solve.
A) 8x = 12; Dana needs to walk 1.5 more miles.
B) x + 3 + 5 = 12; Dana needs to walk 4 more miles.
C) x + 12 = 3 + 5; Dana needs to walk 4 more miles.
D) x - 3 + 5 = 12; Dana needs to walk 10 more miles.
Mathematics
1 answer:
Kazeer [188]3 years ago
5 0

Answer:

4 miles - Answer is B

Step-by-step explanation:

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Leonardo wrote an equation that has an infinite number of solutions. One of the terms in Leonardo's equation is missing, as show
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Answer:

The missing term is 3x

Step-by-step explanation:

Given

-(x - 1) + 5 = 2(x + 3) - _

Required

Find _

For proper identification of the parameters, represent _ with Z

So, the equation becomes

-(x - 1) + 5 = 2(x + 3) - Z

Open bracket (start from the left hand side)

-x + 1 + 5 = 2(x + 3) - Z

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Solve like terms

-x + 6 = 2x + 6 - Z

Subtract 6 from both sides

-x + 6 - 6 = 2x + 6 - 6 - Z

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Subtract 2x from both sides

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4 0
3 years ago
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Find the student’s error in solving the following inequality.
Leto [7]

Answer:

The student should have switched the direction of the inequality sign to

get –5 > x for a final answer.

Step-by-step explanation:

When multiplying or dividing an inequality by a negative "flip" the inequality sign

The student should have switched the direction of the inequality sign to

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---------------

Note:

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Mallorie has 5$ in her wallet. If this 10% of her monthly allowance,what is her monlthly allowance?
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50 because 5 times 10 is 50
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-3x - 4y = 2<br> 3x + 3y = -3
densk [106]

Answer:

x = -2

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Step-by-step explanation:

-3x - 4y = 2

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5 0
3 years ago
K<br> M<br> N<br> L <br>Radius:13<br> Diameter:26 cm <br>Circumference:?<br> Area:?
Step2247 [10]

Answer:

Given radius (R) = 13

Diameter =  2R =  26

Circumference =  2πR

=  26π

=  81.681408993335

Area =  πR2

=  169π

=  530.92915845668

Step-by-step explanation:

While a circle, symbolically, represents many different things to many different groups of people including concepts such as eternity, timelessness, and totality, a circle by definition is a simple closed shape. It is a set of all points in a plane that are equidistant from a given point, called the center. It can also be defined as a curve traced by a point where the distance from a given point remains constant as the point moves. The distance between any point of a circle and the center of a circle is called its radius, while the diameter of a circle is defined as the largest distance between any two points on a circle. Essentially, the diameter is twice the radius, as the largest distance between two points on a circle has to be a line segment through the center of a circle. The circumference of a circle can be defined as the distance around the circle, or the length of a circuit along the circle. All of these values are related through the mathematical constant π, or pi, which is the ratio of a circle's circumference to its diameter, and is approximately 3.14159. π is an irrational number meaning that it cannot be expressed exactly as a fraction (though it is often approximated as 22/7) and its decimal representation never ends or has a permanent repeating pattern. It is also a transcendental number, meaning that it is not the root of any non-zero, polynomial that has rational coefficients. Interestingly, the proof by Ferdinand von Lindemann in 1880 that π is transcendental finally put an end to the millennia-old quest that began with ancient geometers of "squaring the circle." This involved attempting to construct a square with the same area as a given circle within a finite number of steps, only using a compass and straightedge. While it is now known that this is impossible, and imagining the ardent efforts of flustered ancient geometers attempting the impossible by candlelight might evoke a ludicrous image, it is important to remember that it is thanks to people like these that so many mathematical concepts are well defined today.

Circle Formulas

D = 2R

C = 2πR

A = πR2

where:

R: Radius

D: Diameter

C: Circumference

A: Area

π: 3.14159

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3 years ago
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