Questions in mathematics

Questions in mathematics

📝 Answered - The revenue from selling $x$ shirts is $r(x)=15x$. The cost of buying $x$ shirts is $c(x)=7x+20$. The profit from selling $x$ shirts is $p(x)=r(x)-c(x)$. What is $p(x)$? A. $p(x)=22x-20$ B. $p(x)=8x+20$ C. $p(x)=8x-20$ D. $p(x)=22x+20

📝 Answered - Simplify: $-(8-10)-(3-11)=$

📝 Answered - A. Each sum has an alphabet. Multiply and write the alphabet with the matching number below. The letters tell you what Manu's birthday gift is. 82 x 41 (C) 546 x 27 (R) 826 x 35 (S) 608 x 49 (A) Manu's Birthday gift: 3362 29792 14742 28910 B. Kritika solved the expression 5 + 2 x 3 - 1 as shown. Is her method correct? If her method is not correct, then solve it correctly. Kritika's Method: 5 + 2 x 3 - 1 = 7 x 3 - 1 = 21 - 1 = 20 Correct Method: 5 + 2 x 3 - 1 = 5 + 6 - 1 = 11 - 1 = 10 C. Shalini solved the expression 10 ÷ 2 + (6 - 3) as shown. Is her method correct? If her method is not correct, then solve it correctly. Shalini's Method: 10 ÷ 2 + (6 - 3) = 5 + (6 - 3) = 5 + 3 = 8 Correct Method: 10 ÷ 2 + (6 - 3) = 10 ÷ 2 + 6 - 3 = 5 + 6 - 3 = 11 - 3 = 8 D. Estimate the answer in each of the following: 1. 78322 + 2697 2. 2136 + 2753 3. 86487 - 3549 4. 5365 - 3256 5. 1147 x 23 6. 5368 ÷ 35

📝 Answered - The large hand of a clock is 42 cm long. How much distance does its extremity move in 20 minutes? (a) 88 cm (b) 80 cm (c) 75 cm (d) 77 cm

📝 Answered - Multiply the numbers by the center number. There are two multiplication wheels. The first one has 4x in the center, and the second one has 5x in the center. Each wheel has numbers around it, and empty spaces to write the answers. The numbers around the first wheel are 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. The numbers around the second wheel are 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. The question is to multiply the center number by the numbers around the wheel and write the answers in the empty spaces.

📝 Answered - Solve this system of equations using the substitution method. [tex] \begin{array}{l} y=5 x-3 \ y=-6 x+8 \end{array} [/tex] Because both equations equal [tex]y[/tex], we can substitute one of the equations for [tex]y[/tex]. This will create an equation with only one variable, [tex]x[/tex]. [tex] \begin{aligned} 5 x-3 & =-6 x+8 \ {[?] x-3 } & =8 \end{aligned} [/tex]

📝 Answered - A transformation was applied to $X Y Z$ to create $X^{\prime} Y^{\prime} Z^{\prime}$. Which statement explains whether or not the transformation is isometric? A. It is isometric because both figures have equal corresponding side lengths and angles. B. It is isometric because both figures are right triangles. C. It is not isometric because corresponding angle measures are the same but corresponding side lengths are different. D. It is not isometric because there was no change in shape.

📝 Answered - What is the reciprocal of the number 2? A. [tex]$2 / 1$[/tex] B. [tex]$1 / 2$[/tex] C. 22 D. [tex]$\sqrt{2}$[/tex]

📝 Answered - What is the slope of a line that is parallel to the line [tex]y=-\frac{1}{5}[/tex]? A. [tex]-\frac{1}{5}[/tex] B. 0 C. 5 D. undefined

📝 Answered - Find the value of [tex]$7426 \times 60+7426 \times 30$[/tex].