Let w be the subspace of vectors in r4 that are orthogonal to w = (1, -7, 5, 4). find a basis for w. what is the dimension of this subspace? basis basis {c } dimension

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax