Questions in mathematics

Questions in mathematics

[Done] Douglas wants to draw a circle graph showing the favorite colors of his friends. When he polled his friends, the responses were as follows: - 25% said red - 30% said blue - 20% said green - 10% said purple The remaining friends chose colors other than red, blue, green, and purple, which will be grouped together in an "Other" sector. What will be the degree measure of the "Other" sector?

[Done] What is the ordered pair solution for the following system of equations? \[ x + 2y = 5 \] \[ 3x - y = 1 \]

[Done] 71 is 10 less than my number. What is my number?

[Done] If [tex]\log 2^8 = \log 4 + \log x[/tex], what is the value of [tex]x[/tex]?

[Done] Factor the expression: \[ 5a^2 + 7a + 6b^2 - 4b \] Could it possibly be prime?

[Done] Solve the following: a. Draw and label a tape diagram to subtract tens. Write the new number sentence. 1. 23 - 9 = 2. 24 - 10 =

[Done] A restaurant has two pastry ovens. When both ovens are used, it takes about 3 hours to bake the bread needed for one day. When only the large oven is used, it takes about 4 hours to bake the bread for one day. Approximately how long would it take to bake the bread for one day if only the small oven were used?

[Done] 7 kg of soybean oil, which costs $4/kg, was combined with 14 kg of canola oil, which costs $1/kg. Find the cost per kg of the mixture.

[Done] Solve the equation using the square root property: \[ x^2 - 8x + 16 = 1 \]

[Done] Shandra's cat is 23.4 cm tall and 38 cm long. Express these lengths in meters and in millimeters. Please explain how you got it.