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3 years ago

How do you solve a quadratic equation with no A do you replace the A with a 0?

Mathematics

1 answer:

Svet_ta [14]3 years ago

7 0

Answer:

yes

Step-by-step explanation:

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What is the missing step in the proof?

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Find x+y. Please help Please help

marshall27 [118]

Answer: x = 12, y = 50

Step-by-step explanation: 2y-5 and 95 are vertical angles and vertical angles are always congruent (equal). So, 2y - 5 = 95. 2y = 100. y = 50. Solving for x is slightly more difficult. 3x and 144 are linear pairs and linear pairs are adjacent and equal 180° because a straight line is 180°. So 3x + 144 = 180. 3x = 36. x = 12.

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3 years ago

For a study on a new cold medicine, a group of 100 participants with cold symptoms was studied for one month in the spring. One-

Ivenika [448]

One fifth of the participants is 1/5*100=100/5=20 is the number of the participants given medicine. So the number of participants given placebo is 100-20=80.

80% of the 80 who took placebo felt improvements, so 20% of 80, which is
(20/100)*80=(2/10)*80=160/10=16 is the number of participants who took placebo and felt no improvement.

P(choosing participant who took placebo and felt no improvement)=

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3 years ago

Consider the triangles shown. If mUTV < mUTS < mSTR, which statement is true?

Tresset [83]

Answer:

The true statement is UV < US < SR ⇒ 1st statement

Step-by-step explanation:

"I have added screenshot of the complete question as well as the

diagram"

* Lets revise the hinge theorem

- If two sides of one triangle are congruent to two sides of another

triangle, and the measure of the included angle between these two

sides of the first triangle is greater than the measure of the included

angle of the second triangle then the length of the third side of the

first triangle is longer than the length of the third side of the second

triangle

* Lets solve the problem

- The figure has three triangles have a common vertex T

- m∠UTV < m∠UTS < m∠STR

- From the hinge theorem above

∵ The side opposite to ∠UTV is VU

∵ The side opposite to ∠UTS is US

∵ The side opposite to ∠STR is SR

∵ m∠UTV < m∠UTS < m∠STR

∴ UV < US < SR

* The true statement is UV < US < SR

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3 years ago