All Questions ⁺⁰237665 Questions

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342

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Coefficient

Find the coefficient of y^4 in the expansion of (2y - 7)^5.

Guest Jul 3, 2021

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550

2

need help

Write down the quadratic equation whose roots are x = -7 and x = 8 and the coefficient of x^2 is 1.
Enter your answer in the form "x^2 + bx + c = 0".

Guest Jul 3, 2021

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493

1

plz help

What non-zero rational number must be placed in the square so that the simplified product of these two binomials is a binomial: $(7t - 10)(3t + \square)$? Express your answer as a mixed number.

Guest Jul 3, 2021

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453

1

PLEASE HELP GEOMETRY

Points X, Y, and Z are on the sides QR , PR, and PQ respectively, of right triangle PQR such that PZXY is a square. If PQ=12 and PR=8, then what is the side length of the square?

read more ..

Guest Jul 3, 2021

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482

2

PLS HELP

Vanessa will graph the lines y = 1/3x + 7 and y = 2x+5. What is the sum of the x-coordinates of the two lines' x-intercepts? Express your answer as a decimal to the nearest tenth.

Guest Jul 3, 2021

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439

1

PLS HELP DUE TODAY

Line l1 represents the graph of 3x + 4y = -14. Line l2 passes through the point (-5,7), and is perpendicular to line l1. If line l2 represents the graph of y=mx +b, then find m+b.

Guest Jul 3, 2021

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466

1

PLEASE HELP ASAP

Points X, Y, and Z are on the sides QR , PR, and PQ respectively, of right triangle PQR such that PZXY is a square. If PQ=12 and PR=8, then what is the side length of the square?
[asy]
pair A, B,C,D,EE,F;
A read more ..

Guest Jul 3, 2021

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495

3

+45

logarithm

What is the real value of in the equation ?

amc81012 Jul 3, 2021

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312

0

algeb pls help tnx!!!!!

A certain Dessert store conducts a customer survey to determine the preferences of its customers for the
Drinks. Customers are asked what type of Drinks they like. They may choose from Coffee, Vanilla, or
Choco, and none of the above (N). Of 100 customers read more ..

Guest Jul 3, 2021

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417

1

Geometric series

The sum of the first n terms in the infinite geometric sequence 1/4, 1/8, 1/16, ... is 15/32. Find n.

Guest Jul 3, 2021

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462

1

modular arithmetic

What is the smallest integer n, greater than 1, such that 1/n (mod 130) and 1/n (mod 9) are both defined?

Guest Jul 3, 2021

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469

2

PLS HELP Melody

Simplify (1-i)/(2+3i), where i^2 = -1.

Simplify $\displaystyle\frac{1-i}{2+3i}$ , where $i^2 = -1.$

Guest Jul 3, 2021

+1

509

4

+58

please help on this problem!

Let $ABC$ be an acute triangle with circumcenter $O$ and orthocenter $H.$ Let $E$ be the intersection of $BH$ and $AC$ and let $M$ and $N$ be the midpoints of $HB$ and $HO,$ respectively. Let $I$ be the incenter of $AEM$ and $J$ be the interseciton of $ME$ read more ..

hellothere Jul 3, 2021

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335

1

Help

Refer to the graph of y = sin(x) or y = cos(x) to find the exact values of x in the interval [0, 4𝜋] that satisfy the equation. (Enter your answers from smallest to largest. Enter NONE in any unused answer read more ..

Guest Jul 3, 2021

Jul 2, 2021

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449

1

Algebra

Find all pairs (x,y) of real numbers such that x + y = 10 and x^2 + y^2 = 56 - 3xy. For example, to enter the solutions (2,4) and (-3,9), you would enter "(2,4),(-3,9)" (without the quotation marks).

Guest Jul 2, 2021

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379

1

help algebra

The roots of the quadratic equation z^2 + az + b = 0 are -7 + 3i and -7 - 3i. What is a + b?

Guest Jul 2, 2021

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537

1

The plot

The plot below shows the length of 15 strings used in an experiment.How much longer is the largest string than the length of the two smallest strings combined? All measurements are rounded to the nearest 1/4 inch

Guest Jul 2, 2021

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503

2

help ok thx

(a) How many cards are in a complete deck of Set?
(b) How many unique sets are there?
When three cards form a set, we can also count the number of attributes for which all three cards are the same. For example, in the set below, all three cards have read more ..

Guest Jul 2, 2021

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428

2

factoring

The expression 3x^2 + 10x + 8 can be written in the form (3x + A)(x + B) where A and B are integers. What is the value of A - B?

Guest Jul 2, 2021

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494

1

For what real value of is a root of?

For what real value of is a root of ?

Guest Jul 2, 2021

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382

1

PLZ ANSWER QUICK

Find a nonzero such that has only one solution.

Guest Jul 2, 2021

0

455

1

+313

Fractions

Aiden's lawn care business made $9 yesterday. He decided to save 2/3 of his earnings and spend the rest on supplies. How much money did Aiden spend on supplies?

apsiganocj Jul 2, 2021

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531

4

+129

ratios, fractions

2/9 of the pupils in Primary 5 scored an 'A' for a test. The ratio of the number of pupils who scored a 'B' to the number who scored an 'A' was 5 : 3. The rest of pupils scored a 'C' and a 'D' in the ratio 6 : 5. The pupils who scored a 'B' were 48 more read more ..

Soyoxxommm Jul 2, 2021

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