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Dominik [7]
3 years ago
13

A student’s rectangular desk is 30 inches long and 18 inches wide. The teacher’s desk is similar to the student’s desk and has a

length of 50 inches. What is the width of the teacher’s desk?
Mathematics
1 answer:
Kitty [74]3 years ago
6 0
The teacher width of teacher desk is 30 inches 

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The diagram shows a regular polygon<br> What is the value of x?<br> How do I solve this
I am Lyosha [343]

Answer: x=120°

Step-by-step explanation:

What you are looking for is the value of the exterior angle of the regular polygon.

For a n-sided regular polygon, the external angle is given by the formula 360°/n.

Because the shape in this example is a regular triangle, the value of n is 3.

360°/n

=360°/3

=120°

Therefore, x=120°

3 0
2 years ago
A Galapagos cactus finch population increases by half every decade. The number of finches is
Angelina_Jolie [31]

Answer:

The number of fringes at d=-2 is given as 20.

Step-by-step explanation:

Question

A Galapagos cactus finch population increases by half every decade. The number of finches is modeled by the expression

,

where d is the number of decades after the population was measured. Evaluate the expression for d = −2

Given :

The number of  finches is modeled by the expression  :

⇒ 45\cdot1.5^d

where d is the number of decades after the population was measured.

To evaluate the expression for d=-2

Solution:

In order to evaluate the given expression to find the number of finches at d=-2, we will plugin -2 for d in the expression and simplify it.

Plugging in d=-2 in the expression:

⇒ 45\cdot 1.5^{-2}

Using negative exponent property. [a^{-x}=\frac{1}{a^x}

⇒ 45\cdot \frac{1}{1.5^2}

⇒ 45\cdot \frac{1}{2.25}

⇒ 20   (Answer)

Thus, the number of fringes at d=-2 is given as 20.

This means the number of fringes two decades ago was 20.

6 0
3 years ago
A scientist is studying the impact of certain vitamins on a person's ability to remember. The sample size for the experimental g
vovikov84 [41]

Answer:

0.09 average effect

Step-by-step explanation:

Given that the t statistics = 1.54

Sample size (n) = 25

Therefore, variance = t²/n

Variance = 1.54²/25

Variance = 2.372/25

Variance = 0.09

3 0
3 years ago
Someone help me with this please
Fofino [41]

Answer:

pretty sure it's B, its just really hard to see

Step-by-step explanation:

8 0
2 years ago
The area of a circle is 201cm² . what is the diameter ?
lisabon 2012 [21]

The answer is 16 cm approx.

Diameter= 2\sqrt{a/pi}

=>2\sqrt{201 / 22/7}

=>2\sqrt{201*7/22}

=>15.997.......

=> 16 approx

Hope this helps you!!

8 0
3 years ago
Read 2 more answers
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