1,084 Answered Questions for the topic ACT Math

04/21/21

URGENT MATH NEED A EXPERT
URGENT MATH NEED AN EXPERTDRACULA IS Getting ready for his birthday party, - AND HE WANTS TO SERVE SOME OF HIS FAMOUS ‘MONSTER MIX’ - BUT THERE IS A PROBLEM: HE ISN’T SURE WHAT SUPPLIES TO BUY.... more
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04/21/21

URGENT MATH NEED AN EXPERT
DRACULA IS Getting ready for his birthday party, - AND HE WANTS TO SERVE SOME OF HIS FAMOUS ‘MONSTER MIX’ - BUT THERE IS A PROBLEM: HE ISN’T SURE WHAT SUPPLIES TO BUY. BUYING TOO MUCH WILL MAKE... more
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Act Math Math Sat Math Maths

04/20/21

Show that the given functions are orthogonal on the indicated interval.
F1(x)=x , F2(x)=cos2x  ,[-pi/2,pi/2]
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04/18/21

Solutions of an inequality
With what value of a the solutions of the inequality are all real numbers?1. 0.2^x+3 > a-22. (1/5)^x+3 > a^2-9a
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04/17/21

Write the system of linear equations represented by the augmented matrix. (Use the variables x, y, z, and w, if applicable.)
7 -5    -148 3 -16= ________ ________
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04/17/21

State the elementary row operations applied to the first augmented matrix A to transform it to its row-equivalent matrix B.
A = 1 −2 7 6 4 1 B = 1 −2 7 0 16 −41 A: 2R2 + R1B: 5R2 - 15R1C: (-6)R1 + R2D: Interchange R1 and R2E: None of these
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Act Math Math Sat Math Maths

04/16/21

What is the center and radius of the circle represented by the equation (x – 9)2 + (y + 2)2 = 4?
A.center: (–9, 2), radius: 4B. center: (–9, 2), radius: 16C. center: (9, –2), radius: 4D. center: (9, –2), radius: 2
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Act Math Math Sat Math Maths

04/16/21

The vertices of GHJK are G(–1, 0), H(1, 6), J(5, 6), and K(5, 2). What is the most precise classification of GHJK?
A.quadrilateralB.trapezoidC.parallelogramD.kite
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04/16/21

Which statement is true? Select all that apply.
Which statement is true? Select all that apply.A. AB=CDB. AB=BCC. AD=BC+2aD. 𝐴𝐵^- ll CD^-E. AD^- ll BC^-(^- means the letters have a line above them)
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04/16/21

Rays HG and HJ are tangent to ⊙Q. What is 𝑚𝐺𝐾𝐽⏜ ?
Rays HG and HJ are tangent to ⊙Q. What is   𝑚𝐺𝐾𝐽⏜ ?  =  ˚
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04/16/21

What is RS? Round to the nearest tenth.
What is RS? Round to the nearest tenth.
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04/16/21

What are the coordinates of the vertices of D(3, A) (△ABC) for A(0, 4), B(–2, 5), and C(3, 7)?
A.)A′(0, 12), B′(−6, 15), C′(9, 21)B.)A′(0, 15), B′(−6, 18), C′(9, 24)C.)A′(0, 9), B′(−6, 12), C′(9, 18)D.)A′(0, 4), B′(−6, 7), C′(9, 13)
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Act Math Math Science English

04/16/21

What is the chances of getting a perfect score of 36 on the ACT when there is a 25% chance of getting 155 of them right and 20% chance of getting the other 60 right
So this is basically me wondering what the probability of getting a 36 on the ACT with completing guessing each and every problem. Just a curious question. Math has 5 answer choices for each and... more
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Act Math Math Sat Math Maths

04/15/21

I NEED MATH NOW!!!!!!!!!!!!!
A t-shirt and two pairs of shorts cost $53.50. At the same store, two t-shirts and 3 pairs of shorts cast $84. What is the cost of one pair of shorts? Use a system of equations to solve. YOU MUST... more
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04/14/21

Point D is in the interior of ∠ABC. What is m∠DBC? There is angle ABC which is divided into two angles, angle ABD having (3x + 22) degrees and angle DBC having (x - 4) degrees. m∠DBC = °
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Act Math

04/13/21

Select the three ratios that represent the number of blue marbles to red marbles.
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04/12/21

write each sum as a product of two factors 7g+ 14h + 21i
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04/12/21

What is m∠XYQ? A line segment QY intersects another line segment XZ at the point Y to form the angles XYQ and QYZ measuring (10a+2) degrees and (5a-2) degrees respectively. m∠XYQ =
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04/06/21

Tom, a holiday light inspector, has to check a shipment of multicolored Christmas lights. Suppose that the probability of a defective lightbulb is 30%.
a. Find the expected number of bulbs that Tom has to go through until he finds one that is defective.b. Find the probability that the first defective bulb that Tom finds is the 8th bulb.c. Find the... more
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Act Math Math Sat Math Proofs

04/03/21

Mathematics: proof with sets
A) Prove that given sets S and T, we have S⊆T if and only if S=S∩TB) If S∩T=T∪S, then S=TC) If SxT=TxS and both T and S are nonempty, then S=T
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Act Math Math

03/30/21

All 930 students enrolled at a school either walk or ride the bus. Of these students, there exactly 5 times as many who ride the bus as there who walk to school. How many students walk to school?
I don´t know how figured it out and also how if it was asking for how many ride the bus.
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Act Math Math Sat Math Algebra

03/30/21

Some basic proof by cases problems
I'm stuck on these basic proof problems. Could you share your solutions with me?a)Prove 3|(2n^2+1) if and only if 3∤n for n∈Zb)Let a∈R. Prove that a^2≤1 if and only if -1≤a≤1
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03/29/21

normal distribution
suppose 16 coins are tossed. find the probability of getting the following result using the binomial probability formula and the normal curve approximation.exactly 4 heads.use the table of areas... more
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03/29/21

normal distribution
the mean clotting time of blood is 7.45 seconds with a standard deviation of 3.6 seconds. what is the probability that an individual's clotting time will be less than 4 seconds or greater than 9... more
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03/26/21

Please help me as soon as possible please with algebra homework

Question 1.) A carpet cleaning business has 100 customers when they charge $125 for a cleaning. Research shows that every $5 reduction in price attracts another 20 customers. Which equation could... more
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