Grade - math word problems - page 727 of 945

Number of problems found: 18898

Rectangular 4598
The rectangular matrix contains three rows and four columns. Determine how many elements this matrix contains.
Determinant 4597
What number do we get if we multiply the determinant of matrix A by the determinant of its inverse matrix?
Together 4596
Pavel has half as much savings as Standa but the same savings as Radek. Standa saved CZK 120 less than Radek. What savings do all three boys have together? A) less than CZK 600 B) CZK 600 C) CZK 960 D) 1200 CZK E) another number of crowns
Cornices 4595
The shop has curtain rods in 140cm, 180cm, and 200cm lengths. Aunt needs to cover the curtain width of 3m 20cm. What cornices will her uncle buy her? How many cm will have to be cut from each?
Sum of money
On a certain sum of money, invested at the rate of 10% compounded annually, the difference between the interests of the first year and the third year is 315. Find the sum.
Doubravka 4593
Eva will mow the garden in 4 hours, and Doubravka will cut it in 3 hours. How long would it take to mow the garden if Eva started an hour earlier and only Doubravka joined it?
Z7-I-4 stars 4949
Write instead of stars digits, so the next write of the product of the two numbers is valid: ∗ ∗ ∗ · ∗ ∗ ∗ ∗ ∗ ∗ ∗ 4 9 4 9 ∗ ∗ ∗ ∗ ∗ ∗ 4 ∗ ∗
The rope
A 68-centimeter-long rope is used to make a rhombus on the ground. The distance between a pair of opposite side corners is 16 centimeters. What is the distance between the other two corners?
Elevator 4590
The elevator goes from the 1st floor to the 6th floor for 50 seconds. How many seconds will it go from the 2nd floor to the 9th floor if it goes at the same speed all the time?
Ratio iso triangle
The ratio of the sides of an isosceles triangle is 7:6:7. Find the base angle to the nearest answer correct to 3 significant figures.
Surface and volume
What is the volume of a sphere with a surface area of 113.04 square meters?
Trapezium
The lengths of parallel sides of a trapezium are (2x+3) and (x+8), and the distance between them is (x+4). If the area of the trapezium is 590, find the value of x.
Thinking 4586
I'm thinking of a number that doesn't belong to the group. Please find it, justify the choice, and divide it by 9. 36,54,56,80,72,64,42,18,24,32,90,48,28,99.
Diameter to area
Find the area of the circle whose diameter is 26 cm.
Cinema 4584
There are 15 seats in the cinema. If we know the number of seats, we will say that there are more than 390 but less than 410.
Scale factor
A prism with a volume of 1458 mm³ is scaled down to a volume of 16 mm³. What is the scale factor in fraction form?
Calculate 4582
Calculate the surface of a sphere whose volume is 33.9 cm cubic.
Calculate - sphere
Calculate the surface and volume of the sphere if its radius r = 5 cm.
Calculate 4580
Calculate the surface and volume of the sphere if the diameter d = 6.5dm.
Prescribed 4579
The racing ball for men has a prescribed weight of 7250g. It is made of iron. How does its diameter change if we make it from lead? The density of iron is 7.8 g / cm cubic, and the density of lead is 11.3 t / m cubic.

Do you have unsolved math question and you need help? Ask a question, and we will try to solve it. We solve math question.