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3 years ago

13

(26 points!!!) Find the measurement indicated in each trapezoid. (ISOSCELES TRAP) Do NOT include units (degrees, inches, feet, e

tc).*

1 answer:

erica [24]3 years ago

4 0

The measurement for the angle of E is 85.

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Which value is equivalent to the expression 32 × 33?

PilotLPTM [1.2K]

Answer:

The correct answer is D) 243

Step-by-step explanation:

8 0

4 years ago

Solve the system using elimination. Write the solution as an ordered pair. (1 point) SHOW YOUR WORK FOR FULL CREDIT! (2 points)

Gre4nikov [31]

Answer: (1,-1)

Step-by-step explanation:

- You can multiply the first equation by -1

- Add the equations.

- Solve for x, as following:

$\left \{ {{-5x - 4y = -1} \atop {-3x + 4y = -7}} \right.\\------\\-8x=-8\\x=1$

- Substitute the value of x into any of the original equations and then you must solve for y:

$5(1)+4(y)=1\\4y=-4\\y=-1$

Therefore, the solution is: (1,-1)

5 0

3 years ago

Read 2 more answers

Situation: a 25 gram sample of a substance that’s used for drug research has a K-value of 0.1205

Lelu [443]

The decay model is given as

$N=N_0e^{-Kt}$

The substance's half-life is the time it takes for the substance to decay to half its original amount. In other words, it's the time $t$ such that $N=\dfrac{N_0}2$ . Substituting into the model, you have

$\dfrac12=e^{-Kt}$

You can solve for $t$ now.

$\dfrac12=e^{-Kt}$
$\implies\ln\dfrac12=\ln e^{-Kt}$
$\implies-\ln2=-Kt\ln e$
$\implies\dfrac{\ln2}K=t\approx5.7523\text{ days}$

8 0

3 years ago

Benito wrote the equations shown about the figure. Explain Benito’s errors.

Whitepunk [10]

Answer:

Benito's error was stating that the correspongind sides and angles are equal (=) instead of stating that they are congurent (≅).

Explanation:

In geometry two different figures (segments, angles, polygons ,...) are not said to be equal but congruent.

Congruent means that they have the same measure but not that they are equal in other senses.

The use of equal is applied to numbers or variables),so you can tell x = 2, 3 = 3, A = πr², but you should not say segment AB is equal to segment BC. Instead you say segment AB ≅ segment BC, which is segment AB is congruent to segment BC.

Of course, you still can use the word equal (symbol =) if you state that you are talking about measures.

This also can help you

Correct: segment AB ≅ segment BC

Correct: legth of segment AB = length of segment BC

Incorrect: segment AB = segment BC

Segment AB and segment BC are not equal because they are two different segments. They are congruent because they have the same length.

Note: the bars shown over the letters AB, BC, AD, DC, mean segment.

6 0

4 years ago

Eliminate the parameter, t, in the parametric equations, x = 2cost and y = 4sint.

Anna007 [38]

The answer is the fourth one.

8 0

4 years ago