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2 years ago

!READ THE Word Problem THAN ANSWER

Mathematics

1 answer:

erma4kov [3.2K]2 years ago

3 0

Answer:

10(m+20) + 10(m+30)

Step-by-step explanation:

Since Celine worked out twice for 10 days, each day there would two separate equations and also the constants are not the same.

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Debora [2.8K]

Answer: i think 130 and 80

Step-by-step explanation: sorry if wrong

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2 years ago

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What is the circumference of a circle if the diameter is 6.4

melamori03 [73]

The answer is C I’m pretty sure, it makes the most sense

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2 years ago

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If cos A = 3 over 11, then which of the following is correct?

ziro4ka [17]

Answer: The answer is (a) sec A = 11 over 3.

Step-by-step explanation: Given that Cosine of an angle 'A' is 3 over 11,

i.e.,

$\cos A=\dfrac{3}{11}.$

And we need to find which one of the given four options is correct.

We have the following relations between cosine, secant and cosecant of an angle from trigonometry.

$\sec A=\dfrac{1}{\cos A}~~\textup{and}~~\csc A=\dfrac{1}{\sqrt{1-\cos^2 A}}.$

Therefore,

$\sec A=\dfrac{11}{3}$

and

$\csc A=\dfrac{1}{\sqrt{1-\frac{9}{121}}}=\dfrac{1}{\sqrt{\frac{112}{121}}}=\dfrac{11}{4\sqrt 7}.$

Thus, the correct option is (a) sec A = 11 over 3.

3 0

3 years ago

What is the surface area of the square pyramid represented by the net? Enter your answer in the box. m²

Alborosie

Answer:

1.75 meters² or 175 centimeters²

Step-by-step explanation:

Step 1: Find Area of the Base.

Base is a square with dimensions of 7cm by 7cm
$7*7$

49 cm²

Step 2: Find the Area of the Triangles.

Each triangle has a base of 7cm and a height of 9cm.
7 x 9 = 63, and 63/2 = 31.5
31.5 x 4 = 126 cm²

Step 3: Add the areas together.

$49+126$
175 cm²

Thus, the surface area is 1.75 m^2 or 175 cm^2.

7 0

2 years ago

PLEASE ANSWER THIS FAST Will the red square and the orange square always equal the blue square? What colored square is the hypot

Vikentia [17]

Step-by-step explanation:

The area of the blue square will always equal the sum of the area of the orange and red rectangles

The pythagorian theorem:

a²+b² = c²

now let a be the side of the red triangle and b the side of the orange one

so a² is the area of the red triangle and b² is the area of the orange one

Let c be the side of the blue rectangle

so c² is the area of it

then what we concluded is right

the hypotenuse is the blue side since it is the larger one

6 0

2 years ago